Switching Converters 3-13 Core Power Distributed Voltage Conversion 14

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Switching Converters 3-13 Core Power Distributed Voltage Conversion 14

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Power Products Selection Guide
Switching Converters 3-13 Core Power Distributed Voltage Conversion 14-16 Supervisory, Protection Auxiliary Power Management Power Management Industrial Telecom Applications 18-19 Power Management Portable Applications 20-23 Product Highlights 24-31 Designer's Corner 32-35 Webench Online Design Tools
Products
Part Number
Switching Capacitor Step-Down DC/DC Converter LM2771 LM2772 Low-Ripple switched capacitor step-down DC-DC converter Low-Ripple switched capacitor step-down DC-DC converter
Description
Page Number
Dual Switching Regulators Internal Switch LM3370 LM26400 Dual synchronous step-down DC-DC converter with dynamic voltage scaling function through Dual buck regulator
Step-Down (Buck) Single Switching Regulators Internal Switch LM2694 LM2695 LM2696 LM2830/31/32 LM2853 LM3100 LM3676 LM5009 LM5574 LM5575 LM5576 LM25005 LM25007 LM25574 LM25575 LM25576 LM26001/B 30V, step-down switching regulator High voltage (30V, 1.25A) step down switching regulator Constant time buck regulator 1A/1.5A/2A Load, step-down DC-DC regulator SIMPLE SWITCHER® SIMPLE SWITCHER® synchronous 1.5A, buck regulator Step-Down DC-DC With Mode Control 100V step-down switching regulator 75V, 0.5A step-down switching regulator, SIMPLE 75V, 1.5A step-down switching regulator, SIMPLE SWITCHER® SWITCHER® SWITCHER®
75V, step-down switching regulator, SIMPLE SWITCHER® High voltage, 2.5A buck regulator High voltage, 0.5A step-down switching regulator 42V, 0.5A step-down switching regulator, SIMPLE
42V, 1.5A step-down switching regulator, SIMPLE SWITCHER® 42V, step-down switching regulator, SIMPLE SWITCHER
1.5A switching regulator with quiescent current
Step-Up Switching Regulator Internal Switch LM5001 LM5002 LM27313 LM2735X/Y High voltage (75V) switch with internal side N-channel MOSFET High voltage (75V) switch with internal side N-channel MOSFET (0.5A) Boost regulator with internal internal MOSFET SOT23 package KHz/1.6 step-up DC/DC regulator
Step-Up Switching Controller External Switch LM5022 LM3430 60V, Side controller Boost SEPIC 40V, Boost controller backlighting
Switching Controllers Step-Down Non-Isolated Topologies External Switch LM1771 LM3489 LM25115A LM5115A voltage SOT-23 synchronous buck controller with precision enable external compensation Hysteretic PFET buck sleep mode controller with enable 42V, Secoudary side post regulator/DC-DC converter with voltage tracking 75V, Secoudary side post regulator/DC-DC converter with voltage tracking
Abbreviations Wafer
Abbreviations Temperature Range Commercial (0°C 70°C) Extended commercial (0°C 125°C typ)* Industrial (-40°C 125°C) Military (-55°C 125°C)
Abbreviations Features Powergood Soft-start Shutdown Sync Synchronous Rectification
Part Number
Dropout Linear Regulators (LDOs) Positive Output LP38851/4/7 LP38852/5/8 LP38853/6/9 LP3991 LP3996 LP5952 LP5996 Power Sequencers LM3880 Voltage Reference LM4128 LM4132 LM5072 LM5073 LM3402/HV LM3404/HV LM3405 Swap Controller LM5069 LP3906 LP3910 LP3913 LP3917 LP3955 LP3971 LP3972 LP5551 LP3958 LP5526 LP5527 LM27965 LM27966 LM3207 LM3208 LM3280 Positive high voltage hot-swap controller with latched fault auto-retry options Power management unit with interface power handheld applications Power management hard driver based portable media players Power management flash memory based portable media players CDMA Cellular phone power management unit CDMA Cellular phone power management system Power management unit advanced application processors Power management unit with multi interface advanced application processor PowerWise technology compliant energy management unit Lighting management unit controlling white LEDs main display sets white LEDs keypad Lighting management unit with high voltage boost converter with serial flash driver Lighting management unit camera flash LEDs with programmability Dual display white driver with interface White driver with interface Miniature, Adjustable, Step-Down DC-DC Converter Power Amplifiers with Integrated Vref Miniature, Adjustable, Step-Down DC-DC Converter Power Amplifiers with Rdson Management Adjustable Step-Down DC-DC Converter LDOs Power Management Integrated Power Management Units (PMUs) SOT-23 Precision Micropower Series Voltage Reference SOT-23 Precision Dropout Voltage Reference Integrated interface DC-DC converter with input capability Power Over Ethernet Interface with Aux. Support 6-75V, 0.5A constant current back regulator 6-75V, constant current back regulator 22V, KHz/1.0 constant current back regulator outputs Power Sequencers 0.8A Dual Rail with soft start enable 1.5A Dual Rail with soft start enable Dual Rail with soft start enable linear regulator optimized post regulation topology dual linear regulator with power reset dual rail linear regulator optimized post regulation topology dual linear regulator
Description
Page Number
Power-over-Ethernet (PoE) Solutions
High Power Driver
Lighting Management Units (LMUs)
White Driver Inductorless
Step-Down Switching Regulators Power Amplifiers
Switching Converters
Inductorless Switching Regulators
Part Number
LM2750 LM2751 LM2760 LM2770
VOUT
4.5, 3.32 1.2/1.5 1.2/1.57 Adjustable negative1 1.82 1.5, 1.8, 2.02
IOUT (mA)
(kHz)
1700 1100 1100 1000
5000 1000
Temp Range (°C)
Other Features/Comments
Excellent thermal properties Driver Short circuit thermal protection Soft-start, sleep-mode, pin-selectable voltage scaling High output accuracy, output ripple High output accuracy, output ripple noise, shutdown Fast turn-on time Output-OK battery-OK flags Step-up/step-down multi-gain architecture
Packaging
LLP-10, LLP-10 SOT23-5 LLP-10 LLP-10 LLP-10 micro SMD-8 MSOP-10 MSOP-10 MSOP-10
LM2771 LM2772 LM2787 LM2797 LM2798 LM3354
Adjustable Custom
1.8, 3.3, 4.1, 5.02
output voltage range: -1.5V -5.2V output voltages possible increments. Contact National more information.
Dual Switching Regulators Internal Switch
Part Number
LM2716
Description
buck boost regulator single Dual buck Dual buck programmable Dual buck
Channel Output
3.3V 1.2A (buck) Fixed 3.3V 1.6A
Channel Output
20V) 3.6A switch (boost) 1.8A 1.8V 3.3V
(kHz)
2000
Internal MOSFET RDSON
0.12 boost, 0.16 buck 0.16 PFET: 0.4; NFET: 0.25 0.175
Enable
Other Features/ Comments
Individual enable soft-start pins each channel; external compensation versions: Buck1 3.3V Fixed Adj.
Temp Range (°C)
Packaging
TSSOP-24
LM2717
TSSOP-24 LLP-16 TSSOP-16, LLP-16
LM3370
LM26400
Individual enable soft start pins each channel; internal compensation
Automatic Step-Up/Step-Down Inductorless Switching Regulators
Part Number
LM2760 LM3354
VOUT
IOUT (mA)
(kHz)
1000
Temp Range (°C)
Packaging
SOT23-5 MSOP-10
1.8, 3.3, 4.1,
Step-Down (Buck) Single Switching Regulators1 Internal Switch
Part Number
IOUT
VOUT Options (Adj Range)
(kHz)
Sync
Clock Sync
WEBENCH Simulation
Temp Range (°C)
Other Features/ Comments
Internal startup regulator internal 100V/0.5A N-MOSFET
Packaging
LM5009
(down 2.5)
MSOP-8, LLP-8
IOUT
LM2770
1.2, 1.5, 1.57
1100
Inductorless converter; sleep power saving mode IOUT ripple noise, inductorless converter
LLP-10 LLP-10
LM2771
300/400 IOUT
LM2612 LM2614 LM2618 1.05, 1.3, 1.5, 3.6) 1.8, 1.83, 1.87, 1.92 1.2, 1.5, 1.6, 1.8, 1.875, 2.5, and, (0.7 2.5) (1.1 3.3) 1000 1000 1000 Pin-selectable modes, VOUT accuracy Pin-selectable modes, VOUT accuracy Similar LM2612 with synchronous rectification mode PWM/PFM modes, 100% duty cycle, only external components, internal compensation, soft-start, stable with ceramic caps PWM/PFM modes, surfacemount components, inductor ceramic caps Internal startup regulator internal 100V/0.5A N-MOSFET micro SMD-10 micro SMD-10 micro SMD-10
LM3670
1000
SOT23-5
LM3673
2000
micro SMD-5
LM5008
(down 2.5)
MSOP-8, LLP-8
IOUT
LM2594HV LM2597HV LM2619 LM2671 LM2674 LM5007 LM5574 LM25007 LM25574
3.3, (1.23 3.3, (1.23 (1.5 3.6) 3.3, (1.21 3.3, (1.21 (down 2.5) (down 1.225) (down 2.5) (down 1.225)
1000 1000
SIMPLE SWITCHER® regulator Error output delay, SIMPLE SWITCHER® regulator Pin-selectable modes, VOUT accuracy 1.5% Output voltage accuracy, SIMPLE SWITCHER® regulator 1.5% Output voltage accuracy, SIMPLE SWITCHER® regulator Internal startup regulator internal 80V/0.7A N-MOSFET COT, SIMPLE SWITCHER® Regulator 1.5% output voltage accuracy Internal startup regulator internal 42V/0.7A N-MOSFET COT, SIMPLE SWITCHER® Regulator 1.5% output voltage accuracy
SOIC-8, DIP-8, SOIC-8, DIP-8, TSSOP-14, micro SMD-10 SOIC-8, DIP-8, LLP-16, SOIC-8, DIP-8, LLP-16, MSOP-8, LLP-8 TSSOP-16 MSOP-8, LLP-8 TSSOP-16
Most these regulators used additional topologies, such inverting, buck-boost, zeta. Part shutdown pulled ground.
Switching Converters
Step-Down (Buck) Single Switching Regulators1 Internal Switch (continued)
Part Number
IOUT
VOUT Options (Adj Range)
(kHz)
Sync
Clock Sync
WEBENCH Simulation
Temp Range (°C)
Other Features/ Comments
Packaging
LM2694
(down 1.25) 1.2, 1.25, 1.375, 1.5, 1.6, 1.8, 1.875, 2.5, 2.8, 3.3, (1.1 3.3) 1.2, 1.25, 1.375, 1.5, 1.6, 1.8, 1.875, 2.5, 2.8, 3.3, (1.1 3.3)
1.5, 1.8, 3.3,
1000
compensation required, ultra-fast transient response, thermal shutdown, standby current PWM/PFM modes, 100% duty cycle, only external components, internal compensation, soft-start, stable with ceramic caps only mode, 100%duty cycle, only external components, internal compensation, soft-start, stable with ceramic caps
Iq,Automatic PFM/PWM mode switching Force PWM, 100% duty circle, only components,internal compensation, soft start, stable with ceramic capacitor
eTSSOP-16
LM3671
2000
micro SMD-5, SOT23-5
LM3674
2000
micro SMD-5, SOT23-5
LM3676
2000
LLP-8
IOUT
LM2736 (1.25 550, 1600, 3000 Thermal shutdown, OVP, Internal compensation soft-start SOT23-6
IOUT
LM2590HV LM2591HV LM2595 LM2598 LM2672 LM2675 LM2734
3.3, (1.23 3.3, (1.23 3.3, (1.23 3.3, (1.23 3.3, (1.21 3.3, (1.21 (0.6 4.5) (down 2.5) (down 2.5)
550,1600, 3000 1600, 3000 1000 Internal
Error output delay, SIMPLE SWITCHER® regulator SIMPLE SWITCHER® regulator SIMPLE SWITCHER® regulator Error output delay, SIMPLE SWITCHER® regulator 1.5% Output voltage accuracy, SIMPLE SWITCHER® regulator 1.5% Output voltage accuracy, SIMPLE SWITCHER® regulator Thermal shutdown, OVP, internal compensation, shutdown current, pulse-by-pulse Internal compensation compensation required; ultra-fast transient response; thermal shutdown Ultra-fast transient response; thermal shutdown
TO263-7, TO220-7, TO263-7, TO220-7, TO263-5, TO220-5, TO263-5, TO220-5 SOIC-8, DIP-8, LLP-16, SOIC-8, DIP-8, LLP-16, SOT23-6, LLP-6 SOT23-5, LLP-6 eTSSOP-14, LLP-10 TSSOP-14, LLP-10
LM2830 LM5010A LM25010
page footnotes.
Step-Down (Buck) Single Switching Regulators1 Internal Switch (continued)
Part Number
1.25A IOUT
VOUT Options (Adj Range)
(kHz)
Sync
Clock Sync
WEBENCH Simulation
Temp Range (°C)
Other Features/ Comments
Packaging
LM2695
(down 1.25)
1000
compensation required, ultra-fast transient response, thermal shutdown, standby current
eTSSOP-14, LLP-10
1.5A IOUT
LM2831 (0.6 4.5) 550, 1600, 3000 MHz) Internal Internal compensation SIMPLE SWITCHER® synchronous regulator COT, SIMPLE SWITCHER® Regulator 1.5% output voltage accuracy COT, SIMPLE SWITCHER® Regulator 1.5% output voltage accuracy sleep-mode, shutdown mode, input voltage sleep-mode, shutdown, input voltage, reference accuracy SOT23-5, LLP-6
LM3100
(down 0.8) (down 1.225) (down 1.225) (down 1.24) (down 1.24)
eTSSOP-20
LM5575
eTSSOP-16
LM25575
1000 (150500)
eTSSOP-16
LM26001
eTSSOP-16
LM26001B
150-500
eTSSOP-16
IOUT
LM2592HV LM2593HV 3.3, (1.23 3.3, (1.23 (0.6 4.5V) 550, 1600, 3000 500, 1500 SIMPLE SWITCHER® regulator Error output delay, SIMPLE SWITCHER® regulator Internal compensation Thermal shutdown, internal compensation, standby current, factory TO263-5, TO220-5, TO263-7, TO220-7, LLP-6, eMSOP-8
LM2832
Internal
LM2852
3.0, 3.3, 2.5, 1.8, 1.5, 1.2,
eTSSOP-14
2.5A IOUT
LM5005 (1.225 (1.225 1.5% Feedback voltage accuracy, emulated current mode, thermal protection 1.5% Feedback voltage accuracy, emulated current mode, thermal protection eTSSOP-20
LM25005
eTSSOP-20
page footnotes.
Switching Converters
Step-Down (Buck) Single Switching Regulators1 Internal Switch (continued)
Part Number
IOUT
LM2670 3.3, (1.21 3.3, (1.21 3.3, (1.21 Output voltage accuracy, SIMPLE SWITCHER® regulator Prog. current limit, output voltage accuracy, SIMPLE SWITCHER® regulator Output voltage accuracy, SIMPLE SWITCHER® regulator compensation required, ultrafast transient response, thermal shutdown, standby current Voltage mode control with internal compensation, standby current COT, SIMPLE SWITCHER® Regulator, 1.5% output voltage accuracy COT, SIMPLE SWITCHER® Regulator, 1.5% output voltage accuracy TO263-7, TO220-7, LLP-14, TO263-7, TO220-7, LLP-14 TO263-7, TO220-7, LLP-14,
VOUT Options (Adj Range)
(kHz)
Sync
Clock Sync
WEBENCH Simulation
Temp Range (°C)
Other Features/ Comments
Packaging
LM2673
LM2676
LM2696
(down 1.25)
eTSSOP-16
LM2853
0.8, 1.0, 1.2, 1.5, 1.8, 2.5, 3.0,
eTSSOP-14
LM5576
(from 1.225)
1000
eTSSOP-20
LM25576
(from 1.225)
eTSSOP-20
IOUT
LM2677 LM2678 3.3, (1.21 3.3, (1.21 3.3, (1.21 Output voltage accuracy, SIMPLE SWITCHER® regulator Output voltage accuracy, SIMPLE SWITCHER® regulator Prog. current limit, output voltage accuracy, SIMPLE SWITCHER® regulator TO263-7, TO220-7, LLP-14 TO263-7, TO220-7, LLP-14 TO263-7, TO220-7, LLP-14
LM2679
page footnotes.
Step-Up (Boost/Flyback/SEPIC) Switching Regulators Internal Switch
Part Number
LM2750 LM2751 LM2753 LM3501
VOUT Options (Max)
(3.8 5.2) 4.5,
Switch Current (mA)
IOUT (4.5V) (5V)
(kHz)
1700 725/300/ 37/9.5 1000
Enable
Clock Sync
WEBENCH Simulation
Temp Range
Other Features/ Comments
Inductorless regulated boost converter driver Flash-LED driver Synchronous rectification, external Schottky diode required internal switch LDO, external compensation Thermal Shutdown Current Mode controller Internal compensation Current-mode converter internal switch LDO, external compensation Thermal Shutdown 2.5% output voltage accuracy Current-mode converter converter amp, Ch+LDO, amp, internal switch, thermal shutdown Current Mode controller internal Soft-start converter External comp, ceramic caps SIMPLE SWITCHER® regulator SIMPLE SWITCHER® regulator SIMPLE SWITCHER® regulator SIMPLE SWITCHER® regulator
Packaging
LLP-10, LLP-10 LLP-10 micro SMD-8
LM5002
Prog. (max.) 1600, Prog. (max.) 600, 1250 1600, 600, 1300 660, 1280 660, 1280 300, 600, 700, 1250 MHz/ 600, 1250 615, 1250
SO-8, LLP-8
LM27313 LM2733X/Y
(5.0 28.0) 17.5) (4.0 24.0) 17.5) 3.3, 3.3, 3.3, 3.3,
1000 1000 1350 1500 1650 2000 2000, 2000 2450 3600 2600 3000 3000 5000 5000
SOT23-5 SOT23-5 SO-8, LLP-8 MSOP-8 SOT23-5 MSOP-8, LLP-24 LLP-24 TSSOP-16, LLP-14 SOT23-5, LLP-6 TSSOP-14, LLP-14 MSOP-8 TO263-5, TO220-5, TO263-5, TO220-5, TO263-5, TO220-5, TO263-5, TO220-5,
LM5001 LM2698 LM2731X/Y LM2622 LM3310 LM3311 LM5000
LM2735X/Y LM2700 LM3224 LM2585 LM2586 LM2587 LM2588
(internal)
Fixed-Gain Inductorless Switched Capacitor Converters Charge Pumps
Part Number
Doublers Inverters
LM2780 LM2781 Inverts input voltage, ultra-low voltage ripple Inverts input voltage, ultra-low voltage ripple (typ) (typ) flying caps output ripple flying caps output ripple, small solution micro SMD-8 micro SMD-8
Function
ROUT
IOUT (mA)
(kHz)
Temp Range (°C)
Other Features/ Comments
Packaging
Switching Converters
Switching Controllers Step-Down Non-Isolated Topologies1 External Switch
Part Number
2.95
7512
VOUT Options (Adj Range)
VOUT Accuracy
IOUT
(kHz)
Mode
Sync
Single Switching Controllers
LM1770
Down Down Down Down Down Down Down Down Down 0.510 Down 1.3V Down 1.27 Down 1.27 Down 0.75 0.75 0.75 0.75
0.510 1.75
1400 1400 2000 2000 2000 2000 2000 1000 1000 1000 1000 200, 1400 1400 1400 1500 1000 1000 1000 1000 1000
Current Voltage Voltage Voltage Voltage Voltage Voltage Voltage Voltage Voltage Voltage Current Hysteretic Hysteretic Hysteretic Emulated Peak Current Voltage Voltage/current injection Voltage mode/ Valley current mode Voltage/current injection Voltage mode/ Valley current mode
LM1771 LM3477/77A LM27241 LM2727 LM2737 LM2742 LM2743 LM2744 LM2745 LM2746 LM2747 LM2748 LM3075 LM3475 LM3485
LM3489 LM3495 LM3743 LM5115
LM5115A LM25115
LM25115A
Dual Switching Controllers
LM2647 LM2657 LM5642
Down 32.5
2511 2511 2011
200, 200,
Voltage with feedforward Voltage with feedforward Current
Many these controllers used drive additional topologies, such inverting buck-boost, zeta, synchronous flyback. range application range unless otherwise noted. Achievable output current using these switching controllers depends different factors, such external transistors (MOSFETs) used, airflow, package, etc. Typically, achievable output currents with good system efficiency range from less than values shown under "IOUT" table above. These calculations made using standard airflow. Larger currents, many times 150% 200% table above "IOUT" values achieved having flow and/or other adequate heat dissipation techniques. Part shut down pulled above 1.3V. Unique architecture composed voltage-follower amplifier comparator with both inverting non-inverting inputs available user.
Lossless ISENSE
Clock Sync
Total Regulators
Temp Range (°C)
Other Features/Comments
Packaging
compensation required Precision enable, compensation required Hysteretic threshold version) programmed current limit; VOUT Selectable pulse-skip mode high light load efficiency 0.6V Internal voltage reference; UVLO, 0.6V Internal voltage reference 4.2V UVLO, TRI-STATE® output during minimum time 2.7V UVLO, TRI-STATE output during tracking, precision threshold External VREF version LM2743 ultra-high accuracy; tracking, sequencing. Start into pre-bias loads, Min_ON time Start into pre-bias loads, Min_ON time high accuracy Start into pre-bias loads, Min_ON time high accuracy VFB, optional frequency synchronize range Start into pre-bias loads, Min_ON time User-selectable FPWM SKIP modes, positive negative current limit, UVLO, Fast transient response, high efficiency, wide range, duty cycle capable compensation required. Current limit; P-FET controller compensation required. Current limit; P-FET controller Power supply tracking, pre-biased startup, skip mode light load Power supply tracking, pre-biased startup Voltage mode/current injection simpifies loop compensation Operates from input, power-up power-down tracking Version LM5115 Version LM5115A
SOT23-5 SOT23-5 MSOP-8 TSSOP-20 TSSOP-14 TSSOP-14 TSSOP-14 TSSOP-14 TSSOP-14 TSSOP-14 TSSOP-14 TSSOP-14 TSSOP-14 TSSOP-20 SOT23-5 MSOP-8 MSOP-8 TSSOP-16 MSOP-10 TSSOP-16, LLP-16 TSSOP-16 TSSOP-16, LLP-16 TSSOP-16
PWM/SKIP FPWM modes; soft shutdown, line feedforward, out-of-phase Same LM2647 with lower auto-recover from faults Out-of-phase channels; individual soft-start allows sequencing
TSSOP-28, LLP-28 TSSOP-28 TSSOP-28
4.5V 5.5V Application input voltage dependent upon MOSFET driver used. 4.xxV 5.xxV only IC's range. Through external MOSFET drivers used. 3.0V 6.0V Dependant upon external voltage reference utilized. channel. Twice this current obtained dual controllers when channels paralleled. 4.5V
Switching Converters
Step-Up (Boost/Flyback/SEPIC) Switching Controllers External Switch
Part Number
2.95 2.95
Output Voltage
(kHz)
1000 1000 1000 1000
Sync
Clock Sync
LM3430 LM3478 LM3488 LM5020 LM5021 LM5022
*The controller will enter low-power state below shutdown threshold 0.45V.
Controllers Isolated Topologies Medium High Power
Part Number
LM5020 LM5021 LM5025/A/B LM5026 LM5030 LM5032 LM5033 LM5034 LM5035 LM5041/A LM5115 LM5115A LM25115 LM25115A
Description
Single ended AC-DC controller Active clamp Active clamp Alternating outputs Dual interleaved Alternating outputs Dual interleaved active clamp Half-bridge controller gate driver Buck-fed cascade alternating outputs Secondary-side post regulator Secondary-side post regulator Secondary-side post regulator Secondary-side post regulator
Mode
Current Current Voltage/feedfwd Current Current Current Voltage Current Voltage Current Voltage/current-injection Voltage mode/ valley current mode Voltage/current-injection Voltage mode/ valley current mode
Topologies
Flyback, forward, buck, boost Flyback, forward Forward active clamp Forward active clamp Push-pull, half-, full-bridge Flyback, forward Push-pull, half-, full-bridge Forward active clamp Half-bridge Current voltage push-pull, bridge Synchronous secondary-side post regulator Synchronous secondary-side post regulator Synchronous secondary-side post regulator Synchronous secondary-side post regulator
(Max)
(kHz)
1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
Sync
down Input/output
UVLO
I-Limit
Cycle-cycle Cycle-cycle hiccup Cycle-cycle hiccup Cycle-cycle hiccup Cycle-cycle hiccup Cycle-cycle hiccup Hiccup Cycle-cycle hiccup Cycle-cycle hiccup Cycle-cycle hiccup Cycle-cycle Cycle-cycle Cycle-cycle Cycle-cycle
High-Speed MOSFET Drivers
Part Number
LM5100A LM5100B LM5100C LM5101 LM5101A LM5101B LM5101C LM5102 LM5104 LM5105 LM5106 LM5107 LM5109B
(MOSFET)
Range
Peak Gate Drive Sink/ Source Current
3.0/3.0 2.0/2.0 1.0/1.0 1.8/1.6 3.0/3.0 2.0/2.0 1.0/1.0 1.8/1.6 1.8/1.6 1.8/1.6 1.8/1.2 1.4/1.3 1.0/1.0
Input Type
Dual, independent Dual, independent Dual, independent Dual, independent Dual, independent Dual, independent Dual, independent Dual, independent Single Single Single Dual, independent Dual, independent
Pulse Width (ns)
Rise/Fall Time (ns)
10/101 10/101 10/101 22/15
Bottom/Top Driver Turn Propagation Delay Time (ns)
20/20 20/20 20/20 25/25 25/25 25/25 25/25 35/35 35/35 25/25 26/26 28/28 30/30
High-Voltage, Half-Bridge Gate Drivers Synchronous Buck Bridge Topologies (Low-Side High-Side Drivers)
Part Number
LM5110-1 LM5110-2 LM5110-3 LM5111-1 LM5111-2 LM5111-3 LM5112
Type
Dual Dual Dual Dual Dual Dual Single
Range
Peak Gate Drive Sink/ Source Current
5.0/3.0 5.0/3.0 5.0/3.0 5.0/3.0 5.0/3.0 5.0/3.0 7.0/3.0
Input Type
Dual, independent Dual, independent Dual, independent Dual, independent Dual, independent Dual, independent Inverting, non-inverting
Output Gate Driver Type
Compound Compound Compound Compound Compound Compound Compound
Rise/Fall Time (ns)
14/12 14/12 14/12 14/12 14/12 14/12 14/12
Turn On/Turn Propagation Delay Time (ns)
25/25 25/25 25/25 25/25 25/25 25/25 25/25
High-Current, Low-Side Gate Drivers Low-Side Topologies (Such Forward, Push-Pull)
load. ability hold MOSFET gates with negative voltage reduces losses when driving threshold voltage MOSFETs.
Compound output driver stages include bipolar transistors operating parallel, leveraging unique advantages both, while reducing drive current variation with voltage temperature. load.
WEBENCH Simulation
Temp Range (°C)
Other Features/Comments
>90% duty cycle, slope compensation; Programmable UVLO, backlighting (companion with LM3432)
Packaging
LLP-12 MSOP-8 MSOP-8 MSOP-10, LLP-10 MSOP-8, MDIP-8 MSOP-10
duty cycle limit (LM5020-1 LM5020-2 respectively); programmable UVLO; slope compensation duty cycle limit (LM5021-1 LM5021-2 respectively); programmable UVLO; slope compensation <90% duty cycle, slope compensation, programmable UVLO
Gate Drivers
2.5/0.25
VREF
1.25V 1.25V 0.75V 0.75V 1.7% 0.75V 1.7% 0.75V 1.7% 0.75V 1.7%
Temp Range (°C)
Other Features/Comments
duty cycle limit (LM5020-1 LM5020-2 respectively) start-up current; cycle skipping; hiccup current limit datasheets unique features LM5025A, LM5025B High bandwidth opto interface; programmable maximum duty cycle Slope compensation, direct opto-coupler interface Controls dual single interleaved converter Intermediate converter controller Controls dual single interleaved converter SyncFET driver, high bandwidth opto interface, thermal sensor/OVP comparator Programmable deadtime, overlap timing Operates from input Operates from input, power-up power-down tracking Version LM5115 Version LM5115A
Packaging
MSOP-10, LLP-10 MSOP-8, MDIP-8 TSSOP-16, LLP-16 TSSOP-16, LLP-16 MSOP-10, LLP-10 TSSOP-16, LLP-16 MSOP-10, LLP-10 TSSOP-20 TSSOP-20, LLP-24 TSSOP-16, LLP-16 TSSOP-16, LLP-16 TSSOP-16 TSSOP-16, LLP-16 TSSOP-16
UVLO
Gate Enable
Chip Enable
Internal Bootstrap Diode
Temp Range (°C)
Other Features/Comments
CMOS input threshold, HIP2100 compatible CMOS input threshold, HIP2100 compatible CMOS input threshold, HIP2100 compatible input thresholds inputs input threshold, HIP2101 compatible input threshold, HIP2101 compatible input threshold, HIP2101 compatible Independently programmable delay (rising edge) Adaptive deadtime with additional programmable delay input threshold, programmable dead time input threshold, programmable dead time input threshold, ISL6700 compatible input threshold
Packaging
SOIC-8, LLP-10 SOIC-8, LLP-10 SOIC-8, LLP-10 SOIC-8, LLP-10 SOIC-8, LLP-10 SOIC-8, LLP-10 SOIC-8, LLP-10 MSOP-10, LLP-10 SOIC-8, LLP-10 LLP-10 MSOP-10, LLP-10 SOIC-8, LLP-8 SOIC-8, LLP-8
UVLO
Negative Drive Capability
Enable
Temp Range (°C)
Other Features/Comments
Non-inverting outputs Inverting outputs inverting, non-inverting output Non-inverting outputs Inverting outputs inverting, non-inverting output Inverting non-inverting input single driver
Packaging
SOIC-8, LLP-10 SOIC-8, LLP-10 SOIC-8, LLP-10 SOIC-8 SOIC-8 SOIC-8 LLP-6
Core Power Distributed Voltage Conversion
Dropout Linear Regulators (LDOs) Positive Output
Output Current
Part Number
LP5900 LP3984 LP3987 LP3988 LP3990 LP3995 LP3999 LP5951 LM9076 LP3997
VOUT
1.25 1.25 1.215
Other Available Voltages9
2.2, 2.0, 2.9, 2.6, 2.85 1.85, 2.6, 2.85 0.8, 1.35 1.6, 1.9, 1.6, 1.7, 1.875, 1.9, 2.0, 2.1, 2.2, 2.4, 1.3, 0.8, 0.8, 0.7, 1.3, 1.4, 1.6,
1.65
VDROPOUT6 (max)
0.15 0.12F 0.1F 0.15F 0.12 (typ) 0.1F 0.1F 0.25 0.25 0.475 0.12 0.075
VOUT Tolerance8
3.5F
LP3991 LP3996 LP5952 LP5996 LP38691 LP38693 LP3871 LP3874 LP3878 LP3879 LP3881 LP3891 LP38841
0.8V
1.32 1.62 1.05
0.56
Dropout Linear Regulators (LDOs) Positive Output (continued)
Output Current
Part Number
LP38851 LP38854 LP38857 LP38690 LP38692 LP3852 LP3855 LP3872 LP3875 LP3882 LP3892 LP38842 LP38852 LP38855 LP38858 LP3853 LP3856 LP3873 LP3876 LP3883 LP3893 LP38843 LP38853 LP38856 LP38859
VOUT
1.25 1.25 1.215 1.215 0.56 1.5V 1.215 1.215
Other Available Voltages9
1.52 1.72 1.12 1.62 2.22
VDROPOUT6 (Max)
0.24 (typ.) 0.24 (typ.) 0.24 (typ.) 0.45 0.45 0.28 0.28 0.45 0.45 0.17 0.32 0.115 0.18 0.18 0.18 0.45 0.45 0.27 0.65 0.21 0.45 0.45 0.45
1.5A
version 1.21V fixed output Dual-rail, VBIAS supply 4.5V denotes value full temp range denotes typical value, otherwise values maximum 25°C (typically quiescent current given minimum load)
Quasi Those regulators originally designed used with ceramic output caps still stable using ceramic capacitors COUT connected series with small resistor simulate needed
max3 (mA)
0.05 0.125F 0.12F 0.12F 0.08 0.15F 0.15F 0.29 0.025 0.1F 0.100F 0.100F
Error Flag
Ceramic Caps Stable5
Temp Range
Other Features/ Comments
bypass capacitor. VRMS, PSRR kHz, COUT 0.47 noise, tantalum output capacitor Sleep mode control Power-good flag output Supports COUT noise, fast turn-on time, optimal analog loads Active shutdown; noise, fast turn-on, optimal Micropower Reverse polarity protection -15V, transient protection +60V Delay delay time using capacitor Dual output Dual output Stable with ceramic capacitors, Stable with ceramic capacitors, Sense noise Sub-bandgap Ideal conversion Ideal conversion Ideal conversion micro SMD-4, LLP-6
Packaging
micro SMD-4, SOT23-5, micro SMD-5 micro SMD-5, SOT23-5, micro SMD-4, SOT23-5, LLP-6 micro SMD-5, LLP-6 micro SMD-5 SOT23-5 TO263-5, MSOP-8 MSOP-8 mirco SMD-4 LLP-10 LLP-10 micro SMD-5 TO252-3, LLP-6 SOT223-5, LLP-6 SOT223-5, TO263-5, TO220-5 SOT223-5, TO263-5, TO220-5 PSOP-8, LLP-8 PSOP-8, LLP-8 TO263-5, TO220-5 TO220-5, TO263-5 TO263-5, TO220-5, PSOP-8
VOUT Tolerance8
2.50 2.50
max3 (mA)
(typ.) (typ.) (typ.) 0.100F 0.100F
Error Flag
Ceramic Caps Stable5
Temp Range
Other Features/ Comments
Ideal conversion Ideal conversion Ideal conversion Stable with ceramic capacitors, Stable with ceramic capacitors, Sense Sense Ideal conversion Ideal conversion Ideal conversion Ideal conversion Ideal conversion Ideal conversion Sense Sense Ideal conversion Ideal conversion Ideal conversion, shutdown current Ideal conversion Ideal conversion Ideal conversion
Packaging
TO263-5, TO220-5, PSOP-8 TO263-5, TO220-5 TO263-5, TO220-5 TO252-3, LLP-6 SOT223-5, LLP-6 SOT223-5, TO263-5, TO220-5 SOT223-5, TO263-5, TO220-5 SOT223-5, TO263-5, TO220-5 SOT223-5, TO263-5, TO220-5 TO220-5, TO263-5 TO220-5, TO263-5 TO263-5, TO220-5, PSOP-8 TO263-5, TO220-5, PSOP-8 TO263-5, TO220-5 TO263-5, TO220-5 TO220-5, TO263-5 TO220-5, TO263-5 TO220-5, TO263-5 TO220-5, TO263-5 TO220-5, TO263-5 TO220-5, TO263-5 TO263-5, TO220-5 TO263-5, TO220-5,PSOP-8 TO263-5, TO220-5 TO263-5, TO220-5
Dropout voltage given full load. denotes value full temperature range, denotes typical value; otherwise values maximum 25°C Denotes products with fixed output voltages that also provide adjustment control output voltage
denotes value full temp range Please contact National additional voltage options
Core Power Distributed Voltage Conversion
Dual Multiple Devices
Part Number Type IOUT (mA) VOUT Accuracy1 Available Voltages2
1.8/1.8, 1.8/3.0, 1.8/3.3, 2.5/2.5, 2.8/2.8, 2.8/3.0, 3.0/3.0, 3.3/2.5, 3.3/3.3, 3.3/3.6, 3.6/3.6, 5.0/5.0 1.8/2.5, 1.8/3.3, 2.5/2.8, 2.5/3.3, 2.6/2.6, 2.8/2.8, 2.8/3.3 1.8/2.5, 1.8/2.8, 2.5/2.5, 2.5/2.8, 2.6/2.6, 2.8/2.8, 2.85/2.85, 2.9/2.9, 3.0/2.8, 3.0/3.0, 3.1/3.1, 3.1/3.3, 3.3/3.3
DROPOUT3 (Max)
max4 (mA)
Control
Error Flag
Ceramic Caps Stable5
Temp Range (°C)
Other Features/ Comments
Packaging
LP2966
Dual
150,
0.19
0.45
MSOP-8
LP2967
Dual
150,
0.22
0.34
noise
MSOP-8, micro SMD-8,
LP3986
Dual
150,
0.1F
0.2F
micro SMD-8
LM2984/
Triple
500, 100,
(3x)
Watchdog supervisor. Reverse voltage transient protection. Ideal automotive use.
TO220-11
denotes value full temp range Please contact National additional voltage options Dropout voltage given full load. denotes value full temperature range, denotes typical value; otherwise values maximum 25°C
denotes value full temp range denotes typical value, otherwise values maximum 25°C (typically quiescent current given minimum load) Those regulators originally designed used with ceramic output caps still stable using ceramic capacitors COUT connected series with small resistor simulate needed
Supervisory, Protection Auxiliary Power Management
Voltage References1
Part Number
LM4120 LM4125
Type
Series Series Series Series Series
Voltages
1.8, 2.048, 2.5, 3.0, 3.3, 4.096, 2.0, 2.5, 1.8, 2.048, 2.5, 3.0, 3.3, 4.096 1.8, 2.048, 2.5, 3.0, 3.3, 4.096 0.52, 0.62, 0.72, 0.752, 0.82, 0.92, 1.0, 1.25, 2.0, 2.5, 4.1, 4.52
Accuracy
0.2, 0.2, 0.1, 0.2, 0.5, 0.05, 0.1, 0.2, 0.4,
TEMPCO (ppm/°C)
DROPOUT
Iq/IOUT Current
A/±5 A/10 A/20
Packaging
SOT23-5, SOT23-5 SOT23-5 SOT23-5 SOIC-8
LM4128 LM4132 LM4140
extensive list voltage reference parts, please visit website power.national.com These other voltages available upon request. Contact your National sales office more information.
Power Supply Supervisory
Part Number
LM37001,2 LM37021,2 LM3706/071,2 LM3708/091,2 LM3710/111,2 LM3712/131,2 LM37221,3 LM37231,3 LM37241,3
Reset timeout Period Customer-Specified
Watchdog Timeout Period Customer-Specified
Separate Watchdog Output
Manual Reset
Power Fall Comparator
Line Output
Output Type
Push Pull -L/H Push Pull -L/H
Package
micro SMD-9 micro SMD-9 micro SMD-9 micro SMD-9 micro SMD-9, MSOP-10 micro SMD-9 SOT23-5 SOT23-5 SOT23-5
Push Pull -L/H Push Pull -L/H Push Pull -L/H Push Pull -L/H Push Pull Push Pull Open Drain
Reset Assertion Down Customer Reset Threshold Voltages: Other Voltages Between 2.2V 5.0V Increments, Contact National Semiconductor Corporation ±0.5% Reset Accuracy Standard Reset Threshold Voltage: 3.08V
Standard Reset Threshold Voltage: 4.63V, 3.08V 2.32V Standard Reset Threshold Voltage: 2.83/2.93-3.08/4.0/4.38/4.63V Local Power Supervisor 3.3V) Standard Reset Threshold Voltage: Factory Programmable 2.4V
Sequencers
Product
Timing Options (ms)
Regulators Able Sequence
Input Voltage
Input Voltage
PowerUp
PowerDown
Enable
Other Features/Comments
Custom timing options available along with customer power-down sequences
Package
SOT23-5
LM3880
Power Management Industrial Telecom Applications
Load Share Controllers
Part Number
LM5080
Range
Share Methods Remote Sense Remote Sense Trim Feedback Temp Range (°C)
Packaging
MSOP-8
Hot-Swap Solutions
Telecom Hot-Swap Controllers
Part Number
LM5068-1 LM5068-2 LM5068-3 LM5068-4
Range
Fault Latch/ Retry
Latch-off Auto-retry Latch-off Auto-retry
Active high Active high Active Active
In-Rush Current
Active/SS Active/SS Active/SS Active/SS
Current Limit Methods Active Limiting Fast Comparator
Temp Range (°C)
Packaging
MSOP-8 MSOP-8 MSOP-8 MSOP-8
High Power Drivers
Part Number
Input Voltage Range
4/max
Output Voltage
Adjustable Adjustable Adjustable
Total Current (mA)
1000
Number LEDs Series
9/15 9/15
Switching Frequency (KHz)
Adjustable Adjustable 550/1600
Topology
Buck Buck Buck
Dimming
Features
feedback voltage. Fast dimming feedback voltage. Fast dimming Feedback, Fast dimming, External compensation, Thin package
Package
MSOP-8 SOIC-8 SOT23-6, MSOP-8
LM3402/02HV LM3404/04HV* LM3405
*Preliminary information
Power-over-Ethernet (PoE) Solutions
Part Number
LM5070
Description
Integrated single-chip solution: interface DC-DC converter Integrated single-chip solution: interface DC-DC converter Integrated single-chip solution: interface DC-DC converter Power Over Ethernet Interface with Support
Range
Current Draw w/AUX Winding
Reference Accuracy
±2.0
Reference Designs Eval Boards
available: highest efficiency simplest implementation available: single dual outputs available: single
Other Features/Comments
Includes LM5020 features plus 80V, line connection switch associated control sequencing fully IEEE 802.3af compliant interface features LM5070 plus auxiliary power interface features LM5071 power level 802.3af compliant device Line Over Voltage Protection 100V, Swap MOSFET Complementary Open Drain Outputs controlling DC/DC converter
Temp Range (°C)
Packaging
TSSOP-16, LLP-16
LM5071
±2.0
TSSOP-16
LM5072
±2.0
eTSSOP-16
LM5073
available
eTSSOP-14
1.5V part signature mode
part classification mode
>22V DC-DC converter operational (UVLO release)
Industrial Telecom High-Voltage (80V/100V) Solutions
Part Number
Integrated Switching Regulators
LM5000 LM5005 LM5007 LM5008 LM5009 LM5010A LM5020 LM5021 LM5025/A/B LM5026 LM5030 LM5032 LM5033 LM5034 LM5035 LM5041/A LM5115 LM25115 Wide 3.1V input, switch boost flyback Ultra-wide input voltage range 2.5A buck regulator input, step-down with fast transient response 100V input, step-down with fast transient response 100V step-down switching regulator input, step-down with fast transient response Single-ended 100V current-mode controller AC-DC current mode controller Active-clamp voltage-mode 100V controller with feed-forward gate driver Active-clamp current-mode 100V controller with gate driver 100V Push-pull current-mode controller with synchronization High voltage dual interleaved current mode controller 100V Push-pull voltage-mode controller with synchronization High voltage dual interleaved current mode controller with active clamp controller with integrated half-bridge syncFET drivers 100V input cascaded controller Secondary side post regulator controller Secondary side post regulator controller Dual drivers 100V synchronous buck bridge topologies 100V Half-bridge power MOSFET drivers 100V Half-bridge gate driver with programmable dead-time Single dual high-current drivers -48V Hot-swap controller with latched fault auto-retry options Positive high voltage hot-swap cortroller with latched fault auto-retry options Modular current-sharing controller
Description
Eval Board
WEBENCH Enabled
Switching Regulator Controllers
MOSFET Drivers
LM5100/1/2/4 LM5105/07/09 LM5106 LM5110/11/12 LM5068 LM5069 LM5080
Hot-Swap Controller
Load Share Controller
Power Management Portable Applications
Memory Solutions Memory Supply Plus Memory Termination
Memory Supply (VDD/VDDQ) Regulators
Part Number
LM2727 LM2737 LM2745 LM27241
Range (PVIN)
IOUT
cont. cont. cont. cont.
VOUT (Min)
Lossless ISENSE
Temp Range (°C)
Other Features/ Comments
Suspend disk shutdown; latch-off Suspend disk shutdown Monotonic start-up, synchronization Pulse-skip mode high light load efficiency
Packaging
TSSOP-14 TSSOP-14 TSSOP-14 TSSOP-20
Memory Termination (VTT) Reference (VREF) Regulators
Part Number
Linear
LP2995 LP2996 LP2997 peak, cont. peak, cont. peak, cont. DDR-II DDR-II Suspend shutdown Suspend shutdown Suspend shutdown, offset SOIC-8, LLP-16, PSOP-8 SOIC-8, LLP-16, PSOP-8 SOIC-8, PSOP-8
Range (PVIN)
Sink/Source
Standards
External Components
Split Rails*
VREF
Thermal Protection
Temp Range (°C)
Other Features/ Comments
Packaging
Switching
LM2744 cont. DDR-II TSSOP-14
*Independent power analog rails
Integrated Power Management Units (PMUs)
Part Number
Description/ Functions
Dual buck programmable
Output Voltage Range
Stepdown Stepdown 2.3V 3.3V Stepdown 0.8V Stepdown 3.5V LDOs: 3.5V Buck 3.5V DC/DC Buck: DC/DC Buck/Boost: LDO: LDO: DC/DC Buck: LDO: Stepdown: 2.5V, Stepdown 1.8V fixed LDO: (programmable) Stepdown: LDOs: Stepdowns: 3.3V LDO: 0.85 DC/DC Buck: 0.725 LDO1: 2.2, LDO2: LDO3: 1.35 Stepdown 1.2V LDO: DC/DC Buck:
IOUT (mA)
1500 (Stepdown) (LDO) LDO: Buck Buck/Boost 1000 LDO: Buck 1,2: Buck 150, 800, Stepdown 150, Stepdown 150, 300, (LDO) 1500 (Stepdown) (LDO); 1500 (DC/DC Buck) 100, (LDO) (Stepdown) LDO: DC/DC Buck:
Output Accuracy
DROPOUT
(typ) full load
Temp Range (°C)
Packaging
LLP-16 LLP-14 LLP-24
LM3370 LP3905 LP3906
Dual buck, dual Dual 1.5A buck, dual programmable
LP3910
Power management hard driver based portable media player Power management Flash based portable media player CDMA with inductive bucks, LDOs, comparators, high speed serial interface transceiver Charger with battery backup, linear regulators, I2C-compatible interface, comparators, drivers control, charging, communications CDMA with linear battery charger, inductive buck, LDOs transceiver Power management unit application processors, buck with Dynamic Voltage Management (DVM), LDOs, back battery charger, GPIOs, I2C-compatible interface Power management unit application processors, buck with Dynamic Voltage Management (DVM), LDO, back battery charger, GPIO, enhanced interface PowerWise® PMU, buck, LDOs PowerWiseTechnology Compliant Energy Management Unit
LLP-48
LP3913
LLP-48
LP3917
micro xt-49
LP3941A
Buck, LDO, Charger
LLP-48
LP3955
LLP-40
LP3971
LLP-40
LP3972
LLP-40
LP5550 LP5551
LLP-16 LLP-36
Lighting Management Unit (LMUs)
Part Number
LM4970 LP3931 LP3933 LP3936 LP3950 LP3954
Description
Audio Synchronized Color Driver Controlling Sets Drivers Controlling White LEDs Fun-light LEDs Controlling White LEDs Fun-light LEDs with Audio Synchronization Sets Drivers Advanced Main Subdisplay, Funlighting, Flashlighting Audio Synchronization with High Voltage Boost Converter Serial Main Subdisplay Backlight Keypad LEDs with High Voltage Boost Converter Serial Flash Driver camera flash LEDs with programmability
Input Voltage Range
2.7-5.5 2.65-2.9 2.65-2.9 2.7-2.9 3-5.5
Drive Current
Max. White-LED Current Output Max. White-LED Current Output
Current Flash Mode
Outputs, Each RGB-outputs, Each RGB-outputs, Each
Current Matching
White with External Ballast White with External Ballast
Functions
Audio Synchronized Flash Function Photo Taken Camera-enabled Cell Phone Boost Switching Regulator, White LEDs, RGB, Interface Boost Switching Regulator, White LEDs, RGB, Ambient Light Sensor with Averaging, 12C/Microwire/SPI Interface Synchronize Audio Inputs with Programmable Pattern Drive Advanced Dual Display Portable Electronics All-in-one Dual Display Devices with Keypads Dedicated Flash Function connectivity test, audio synchronization
Package
LLP-14 LLP-24 CSP-32 CSP-32 CSP-32 micro SMD-36 micro SMD-25 (2.54 2.54 micro SMD-25 (2.54 2.54 micro SMD-30
LP3958
3.3-5.0
LP5526 LP5527
3.3-5.0 3.0-5.5
Power Management Portable Applications
White-LED Drivers Inductive
Part Number
LM2731 LM2733 LM3224 LM3500 LM3501 LM3502 LM3503 LM3519 LM3520 LM3551 LM3552 LM3557
Range
Number LEDs
More than More than String OLED
VOUT (Max)
18.9 22.2
Peak Current (Typ)
1.5A 2.45A 400, 400, 400, 600, 400, 600, 2.1A 2.1A 0.8A
kHz/1.6 kHz/1.6 kHz/1.25 1.25 1.25 1.25
Ambient Temp Range (°C)
1251 1251 1251
Comments
Packaging
SOT23-5 SOT23-5
Flat panel display power, high current driver
MSOP-8 micro SMD-8
Analog input dimming Dual display control Dual display control, analog dimming dimming control LEDs plus OLED subdisplay Flash driver, timeout protection, active enable Flash driver, timeout protection, active high enable 5-LED string
micro SMD-8 micro SMD-10, LLP-16 micro SMD-10, LLP-16 SOT23-6 LLP-14 LLP-14 LLP-14 LLP-8
Junction temperature
White-LED Drivers Inductorless
Part Number
LM2750 LM2751 LM2753 LM27951 LM27952
12.6
Number Individual Outputs
Voltage regulated Voltage regulated Current regulated Current regulated
ILED (mA)
(kHz)
1700 9.5, 300, 1270
ILED
Brightness Control
Analog Brightness Control
Ambient Temp Range
Other Features/ Comments
Constant voltage source multi-LEDs parallel; noise gains Flash driver, continuous load, pulsed load Common cathode current source topology, 0.2% current matching Common anode current sink topology, 0.2% current matching Dual display whit Driver with compatible interface White driver with compatible interface constant current outputs plus regulated constant voltage output (4.35V) driving additional LEDs
Packaging
LLP-10, LLP-10 LLP-10 LLP-14 LLP-14 LLP-24 LLP-24 LLP-14 SOT23-5 LLP-10
LM27965 LM27966 LM3570 LM3590 LM3595
Through Supports white LEDs connected series
TFT-LCD Power Solutions Notebook PCs, Monitors Television
Part Number
LM2622 LM2700 LM2716 LM2717 LM3224 LM3310 LM3311
Range
VOUT (Max)
17.5 17.5 3.3, 3.3,
Boost Switch Peak Current
1.65 Fixed buck: 1.2A, boost: 3.6A Buck 1.6A Buck 1.8A 2.45 2.6,
kHz, kHz, 1.25 kHz, 1.25 kHz, 1.28 kHz, 1.28
Integrated Features
3.3V Output fixed buck adjustable boost Buck 3.3V Buck amp, LDO, amp,
Temp Range (°C)
Packaging
MSOP-8 TSSOP-14, LLP-14 TSSOP-24 TSSOP-24 MSOP-8 LLP-24 LLP-24
Battery Charging Solutions
Part Number
LM3658
Description
USB/AC Adaptor Charger
Input Range
Functions
Charge from either Wall Adaptor, Additional Option with Mode Charge Current Mode Charger Mode, mA/500 Charge Mode
Features
Integrated Power FETs with Thermal Regulator, Additional Option with Hours Timer Battery Temperature Sensing, Charge Status Indicator, Current Sensing Operational Amplifier
Operating Temp Range
Package
LLP-10 LLP-14
LP3947
Wall Adaptor/USB Charger
4.30
Step-Down Switching Regulators Power Amplifiers
Part Number
LM3200
Description
Dynamically adjustable output voltages, inductor, VOUT ripple, noise excellent PSRR Miniature, adjustable, step-down DC-DC converter with bypass mode power amplifiers Miniature, adjustable, step-down DC-DC converter with bypass mode power amplifiers Miniature, adjustable, step-down DC-DC converter with bypass mode power amplifiers Miniature, Adjustable, Step-Down DC-DC Converter Power Amplifiers with Integrated Vref Miniature, Adjustable, Step-Down DC-DC Converter Power Amplifiers with Rdson management Adjustable Step-Down DC-DC Converter LDOs Power Management
VOUT
(0.8 3.6V) (1.3 3.16) (0.8 3.6) (0.8 3.6) (0.8 3.6)
IOUT (mA)
(kHz)
2000
Bypass Modes
Forced automatic None
Sync
Eval Board
Temp Grade
Packaging
micro SMD-10
LM3202
2000
micro SMD-8
LM3203
2000
Forced Forced automatic
enable enable
micro SMD-10
LM3204
300/500
2000
micro SMD-10
LM3207
2000
micro SMD-9
LM3208
(0.8 3.6)
2000
micro SMD-8
LM3280
(0.8 3.6)
mode, bypass mode
2000
micro SMD-16
Product Highlights
LM3207/8 Miniature, Adjustable, Step-Down DC-DC Converter Power Amplifiers
Features
(typ.) Switching Frequency Operates from single Li-Ion cell (2.7V 5.5V) Variable Output Voltage (0.8V 3.6V) Maximum load capability Fast Output Voltage Transient (0.8V 3.4V typ.) (LM3208) High Efficiency (95% VIN, VOUT from internal synchronous rectification (LM3207) High Efficiency (95% VIN, VOUT (LM3208) Integrated 2.875V Vref (LM3207) Regulated Output (LM3207) Fast Vref On/Off Time (LM3207) 9-pin micro Package (LM3207) 8-pin micro Package (LM3208) Current Overload Protection Thermal Overload Protection
Applications
Cellular Phones Hand-Held Radios Cards Battery Powered Devices
LM3280 Adjustable Step-Down DC-DC Converter LDOs Power Management
Features
(typ.) Switching Frequency Operates from single Li-Ion cell (2.7V 5.5V) Adjustable Output Voltage (0.8V 3.6V) DC-DC High-efficiency synchronous buck converter Maximum load capability (PWM mode) Maximum load capability (Bypass mode) PWM, Forced Automatic Bypass Mode Low-dropout fast transient response LDOs 16-pin micro Package Current Overload Protection Thermal Overload Protection
Applications
Cellular Phones Hand-Held Radios Battery Powered Devices
LM3404/04HV 1.0A Constant Current Buck Regulator Driving High Power LEDs
Features
Integrated 1.0A MOSFET Range (LM3404) Range (LM3404HV) 1.2A Output Current Over Temperature Cycle-by-Cycle Current Limit Control Loop Compensation Required Separate Dimming Power Shutdown Supports All-ceramic Output Capacitors Capacitor-less Outputs Thermal Shutdown Protection SO-8 Package
Application Example: Outdoor General Lighting Application
±10% (min) 1.16 BOOT LED1 LED10
(min)
LM3404/04HV
0.5A
Applications
Driver Constant Current Source Automotive Lighting General Illumination Industrial Lighting
RSNS
0.43
LM3676 MHz, Step-Down DC-DC Converter with Mode Control
Features
typical quiescent current maximum load capability fixed switching frequency (typ) Automatic PFM/PWM mode switching Forced mode Available fixed output voltages adjustable version 8-Lead non-pullback package Internal synchronous rectification high efficiency Internal soft start 0.01 typical shutdown current Operates from single Li-Ion cell battery Only three tiny surface-mount external components required (one inductor, ceramic capacitors) Current overload Thermal shutdown protection
Applications
Mobile Phones PDAs Players W-LAN Portable Instruments Digital Still Cameras Portable Hard Disk Drives
Product Highlights
LM3743 N-Channel Synchronous Buck Controller Output Voltages
Features
Input Voltage from 3.0V 5.5V Output Voltage Adjustable Down 0.8V Reference Accuracy: ±1.75%, Over Full Temperature Input Voltage Range Low-side Sensing Programmable Current Limit Fixed High-side Sensing Supplemental Short-circuit Protection Undervoltage Protection Hiccup Mode Protection Eliminates Thermal Runaway During Fault Conditions Externally Programmable Soft-start with Tracking Capability Switching Frequency Options Pre-bias Start-up Capability MSOP-10 Package
VOUT
BOOT 47.5k
HGATE
LM3743
SS/TRACK COMP/EN
ILIM 1.69k LGATE 47.5k 3.57k
24.9k
Applications
22.6k
ASIC/FPGA/DSP Core Power Broadband Communications Multi-media Boxes Networking Equipment Printers/Scanners Servers Voltage Distributed Power
LM5022 Side Controller Boost SEPIC
Features Application Example: 9-16V 0.5A
CIN1 CIN2 CINX RUV2 SYNC 33.2 3.01 3.57 CSNS RSNS
UVLO RUV1 2.61 COMP
LM5022
RFB2 RFB2
Internal Startup Regulator Peak MOSFET Gate Driver Range Duty Cycle Limit Programmable UVLO with Hysteresis Cycle-by-Cycle Current Limit External Synchronizable (AC-coupled) Single Resistor Oscillator Frequency Slope Compensation Adjustable Soft-start MSOP-10 Package
Applications
Boost Converter SEPIC Converter
LM5576 75V, Step-Down Switching Regulator
Features
Integrated 75V, N-channel MOSFET Ultra-wide Input Voltage Range from Internal Bias Regulator Adjustable Output Voltage from 1.225V 1.5% Feedback Reference Accuracy Current Mode Control with Emulated Inductor Current Ramp Single Resistor Oscillator Frequency Setting Oscillator Synchronization Input Programmable Soft-start Shutdown/Standby Input Wide Bandwidth Error Amplifier Thermal Shutdown
Package
TSSOP-20EP (Exposed Pad)
Application Example: Input: 7-75V Output: 5V/3A
INPUT 7.0-75 0.47 OPEN SYNC SYNC RAMP COMP AGND 49.9k 0.01 0.022 CSHD6-100C Output VDC, 3.0A
LM5576
PGND PGND
SHUTDOWN
0.01
21.0k
5.11k 1.65k
Product Highlights
LP3906 Dual High-Current Step-Down DC/DC Dual Linear Regulator with Compatible Interface
Features Efficient LP3906 Provides Flexibility with Digital Programmability
5.5V
LP3906
Buck
1.2V 1500
VOUT 0.8V 2.0V
FPGA/Processor
Core Voltage
Programmable buck regulators support core other high current rails Programmable LDOs support internal processor functions peripherals
Buck
3.3V 1500
VOUT 1.0V 3.5V
Voltages
VOUT 1.0V 3.5V
1.8V
0.47
VOUT 1.0V 3.5V
3.3V
0.47
Auxiliary Voltage Interface
Compatible with advanced applications processors FPGAs LDOs powering Internal processor functions I/Os High speed serial interface independent control device functions settings Precision internal reference Thermal overload protection Current overload protection 24-lead package Software Programmable Regulators
Control
independent control LP3906 peripherals
Applications
FPGA, Core Power Applications Processors Peripheral Power
LP3910/13 Power Management Hard Drive Based Portable Media Players
Features
low-dropout regulators LDO1 used general purpose applications, LDO2 used low-noise analog applications. Both LDOs have programmable output voltages Green charger status drivers 4-channel 8-bit dual slope converter Wide load range Buck-Boost DC/DC converter (LP3910) High-efficiency Buck converters (LP3910) High-efficiency Buck converters (LP3913) compatible interface Linear charger single cell lithium-ion batteries Adapter charging System power supply management package Voltage thermal supervisory circuits Continuous battery voltage monitoring Interrupt Request output with sources LP3913 software compatible with LP3910 Hard Drive based PMIC
Applications
Portable Gaming Devices Portable Navigation Systems Hard Drive-based Players (LP3910) Flash-based Portable Media Players (LP3913)
LP3958 Lighting Management Unit with High Voltage Boost Converter
Features
High efficiency boost converter with programmable output voltage individual drivers serial display backlight LEDs drivers serial keypad LEDs Automatic dimming controller Stand alone serial keypad LEDs controller general purpose pins 25-bump micro Package: (2.54 2.54
Applications
Cellular Phones PDAs Players Digital Cameras
LP3971/72 Power Management Unit Advanced Applications Processors
Features
Compatible with advanced applications processors requiring (Dynamic Voltage Management) Three buck regulators powering high current processor functions I/O's LDO's powering RTC, peripherals, I/O's Backup battery charger with automatic switch lithiummanganese coin cell batteries Super capacitors compatible high speed serial interface Software control regulator functions settings Precision internal reference Thermal overload protection Current overload protection Tiny 40-pin package
Applications
Phones Smart Phones Personal Media Players Digital Cameras Application Processors Intel Xscale Freescale Samsung
Product Highlights
LP3991 Linear Voltage Regulator Digital Applications
Features
Operation from 1.65V 3.6V Input accuracy room temperature Output Voltage from 1.2V 2.8V Dropout 300mA load Quiescent Current Load Inrush Current controlled PSRR 1kHz Start-Up time 1.5V VOUT Stable with Ceramic Capacitors small 0402 Thermal-Overload Short-Circuit Protection micro (0.963 1.446
Applications
Post DC/DC Regulator Battery Operated Devices Hand-Held Information Appliances
LP5526 Lighting Management Unit with High Voltage Boost Converter with Serial FLASH Driver
Features
High efficiency boost converter with programmable output voltage individual drivers serial display backlight LEDs Automatic dimming controller Stand alone controller Dedicated flash function Safety function avoid prolonged flash general purpose pins 25-bump micro Package: (2.54 2.54
Applications
Cellular Phones PDAs Players Digital Cameras
LP5527 Tiny Driver Camera Flash LEDs with Programmability, Connectivity Test Audio Synchronization
Features
High current boost DC-DC converter output current) Programmable boost output voltage flash constant current driver with tolerance safety circuit Synchronization flash timing single-ended audio inputs with gain control Four constant current drivers with 8-bit programmable brightness control Audio synchronization feature compatible control interface Built-in connectivity test maximize manufacturing yield Small micro SMD-30 package (2.5
Applications
Camera FLASH Funlight backlight driving battery powered devices
LP5952 Dual Rail Linear Regulator
Features
Excellent load transient response: typical Excellent line transient response: typical 0.7V 4.5V 2.5V VBATT 5.5V 0.5V VOUT 2.0V ILOAD VBATT VOUT(NOM) 1.5V 2.5V whichever higher ILOAD VBATT VOUT(NOM) 1.3V 2.5V whichever higher typical quiescent current from VBATT typical quiescent current from typical quiescent current shutdown Guaranteed output current Noise voltage VRMS typical Operates from single Li-Ion cell cell NiMH/NiCd batteries Only tiny surface-mount external components required depending application Small bump micro package, lead free Thermal-overload short-circuit protection -40°C +125°C junction temperature range
Applications
Mobile Phones Hand-Held Radios Personal Digital Assistants Palm-Top Portable Instruments Battery Powered Devices
Designer's Corner
Technology Glance
Optimizing Power Amplifier System Efficiency Using DC-DC Converters
Mathew Jacob, Applications Engineering Manager
Method
Standard
Output power controlled RFIN directly connected battery
Method
with Supply Regulator
Output power controlled RFIN connected DC-DC converter VOUT optimized given POUT
VBATT VBATT FOUT VCTRL
Supply Regulator
VOUT FOUT
power amplifiers used CDMA/WCDMA cellular standards have been traditionally powered directly from battery. This makes system implementation easy requirement linear power amplifiers such standards have intrinsic inefficiencies throughout transmit power spectrum. Cellular standards have been evolving with transmission speeds that started from 14.4 kbps CDMA-1 Mbps CDMA2000/WCDMA. Apart from this, cellular providers have increased services bundled with phones order increase average revenue subscriber. same time, talk time battery life expected improved with same slightly higher capacity batteries. This makes system design challenging. System designers have very cautious perform power survey each every component phone board. Power Amplifier powered directly from battery major concern from power budget perspective. modulation schemes used CDMA WCDMA result amplitude-modulated signal that exhibits non-constant amplitude envelope. order preserve signal integrity further spectral
re-growth, linear power amplifier necessary. However, power efficiency traded because power amplifiers operate efficiently when operated gain compression. meet required linearity, operating transmit power backed from power amplifier's compression point that causes overall reduction efficiency. When handset operating transmit mode, power section consumes overall power budget result PA's intrinsic inefficiencies. this reason, linear ideal candidates powered with magnetic buck converter which will dramatically increase efficiency system. Power-Added Efficiency (PAE) performance metric power amplifier. (POUT PIN)/Pdc using DC-DC converter supply regulator) reduce factor denominator. When connected directly battery, Vbatt*Ibatt and, whenit powered
Power/
supply regulator, Vo*Io. itcan seen that increasing have have compared Vbatt Ibatt. This achieved lowering output voltage supply regulator lower transmitted power levels. This turn reduces (current drawn results much lower input current drawn from battery inherent high efficiency DC-DC converter.
BATT
WCDMA Power Probability
5.00 4.00
POUT,dB
3.00 2.00 1.00 0.00
Voice Data
Figure Percentage savings power when powered supply regulator
POUT [dBm]
Figure transmits power levels high percentage time typical cellular phone which reinforces savings possible with supply regulator
have change voltage DC-DC converter transmitted power level increased? answer that this change needed maintain ACPR ratios. ACPR/ACLR used characterize distortion power amplifiers other subsystems their tendency cause interference with neighboring radio channels systems. specified ratio Power-Spectral Density (PSD) main channel measured several offset frequencies. Figure seen that supply voltage increased Pout increased, ACLR specifications cannot met. system-level specification GPP) WCDMA and, order preserve sufficient margin caused temperature device variances, ACLR value used. Requirements Buck Converters Powering Power Amplifiers Buck converters that power have specialized functions quite different from buck converters that power digital core processors. These differences arise operating characteristics parameters such switching ON-resistances, current limit, transient response, modes operation such PFM/PWM, startup time, quiescent current, dropout behavior. following examples illustrate these differences: High efficiency over wide output voltage load range Example: LM3205 efficiency 4.2V, 3.4V, (high power) 3.9V, 1.5V, (low power).
important consider power probability profile (see Figure modulation methods really understand impact savings powering with supply regulator. profiles different urban rural regions. shown Figure output voltage DC-DC converter varied transmitted power levels changed maintain Adjacent Channel Power/leakage Ratio (ACPR/ACLR) specifications. savings battery current high power levels. Figure shows that operating this band power levels majority time.
Curen( 1.5V dBm, Battery curenwith methd Battery curenwith methd BATT 2.4V dBm, 3.25
POUT,dB
Figure Savings battery current when DC-DC converter used powering
Designer's Corner
Technology Glance
1950
VOUT
DROPOUT
ACLR1 [dBc]
(WCDMA)
DC-DC, 3.5V
POUT [dBm]
Figure ACLR affected with respect supply voltage POUT
Dynamic output voltage adjustment Example: LM3205 output voltage adjusted between 0.8V 3.6V using Vcon pin. voltage gain from Vcon 2.5. Output slew rate settling window beginning every transmit cycle which Vcon adjustments must completed) WCDMA architecture, transmit power adjusted every requested basestation. dropout ripple near 100% duty cycle Example: RDSON PFET (LM3205) BypassFET (LM3204) gives dropout voltage pulse-skipping schemes gives ripple near 100% duty cycle. duty cycle operation output voltages Example: Minimum time, facilitates duty cycle operation output voltages 0.8V lower depending range. High switching frequency Example: switching frequency helps smaller sized external components meet spectral emission requirements.
Fast turn time meet time mask transmit ON/OFF Example: LM3203 turn-on time 3.4V from high. 100% Duty Cycle Bypass Mode When buck converter operating 100% duty cycle dropout voltage Dropout Voltage (RON,P where RON,P RDSON PFET inductor DCR. supply regulator that bypass dropout voltage bypass mode Dropout Voltage (RON,BYP) where RON,BYP RDSON bypass FET. bypass turned automatically manually. shown, advantage having bypass mode lower dropout voltages; which translates longer talk times lowering battery shutdown point phone. alternative inductors RDSON PFET.
Example Application Circuits this example, baseband will have lookup table scheme where sets output voltage depending output power levels required. this case, power detector part closed loop sets output voltage.
Conclusion DC-DC converters enhance system efficiency portable communication devices support addition more features functions improving battery life.
TX_ON
LMV228 Power Detector
TX_ON
VCON VOUT
VCON VOUT
PGND SGND
PGND SGND
VREF RF_TX TX_ON
LM3205
Coupler VREF
LM3205
PVIN
TX_ON
RF_TX
PVIN
VBATT
VBATT
*R1, only required VOUT gain needs modified
*R1, only required VOUT gain needs modified
Figure Baseband Controls Directly
Figure Using Power Detector
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1803302-026

Switching Converters 3-13 Core Power Distributed Voltage Conversion 14

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