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LM317 3-TERMINAL ADJUSTABLE REGULATOR
Output Voltage Range Adjustable From 1.25 Output Current Greater Than
(TO-220) PACKAGE (TOP VIEW)
Internal Short-Circuit Current Limiting Thermal Overload Protection Output Safe-Area Compensation
PACKAGE (TOP VIEW)
OUTPUT
OUTPUT
INPUT OUTPUT
INPUT OUTPUT ADJUST
(TO-220) PACKAGE (TOP VIEW)
(SOT-223) PACKAGE (TOP VIEW)
OUTPUT
OUTPUT
INPUT OUTPUT
INPUT OUTPUT ADJUST
description/ordering information
LM317 adjustable three-terminal positive-voltage regulator capable supplying more than over output-voltage range 1.25 exceptionally easy requires only external resistors output voltage. Furthermore, both line load regulation better than standard fixed regulators. ORDERING INFORMATION
PACKAGE POWER-FLEX (KTE) 125°C SOT-223 (DCY) TO-220 (KC) TO-220, short shoulder (KCS) Reel 2000 Tube Reel 2500 Tube Tube ORDERABLE PART NUMBER LM317KTER LM317DCY LM317DCYR LM317KC LM317KCS TOP-SIDE MARKING LM317 LM317
Package drawings, standard packing quantities, thermal data, symbolization, design guidelines available www.ti.com/sc/package.
Please aware that important notice concerning availability, standard warranty, critical applications Texas Instruments semiconductor products disclaimers thereto appears this data sheet.
Copyright 2003, Texas Instruments Incorporated
PRODUCTION DATA information current publication date. Products conform specifications terms Texas Instruments standard warranty. Production processing does necessarily include testing parameters.
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LM317 3-TERMINAL ADJUSTABLE REGULATOR
description/ordering information (continued)
addition having higher performance than fixed regulators, this device includes on-chip current limiting, thermal overload protection, safe-operating-area protection. overload protection remains fully functional, even ADJUST terminal disconnected. LM317 versatile applications, including uses programmable output regulation local on-card regulation. connecting fixed resistor between ADJUST OUTPUT terminals, LM317 function precision current regulator. optional output capacitor added improve transient response. ADJUST terminal bypassed achieve very high ripple-rejection ratios, which difficult achieve with standard three-terminal regulators.
schematic diagram
INPUT
OUTPUT ADJUST
absolute maximum ratings over virtual junction temperature range (unless otherwise noted)
Input-to-output differential voltage, Operating virtual junction temperature, 150°C Lead temperature (1/16 inch) from case seconds 260°C Storage temperature range, Tstg -65°C 150°C
Stresses beyond those listed under "absolute maximum ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated under "recommended operating conditions" implied. Exposure absolute-maximum-rated conditions extended periods affect device reliability.
package thermal data (see Note
PACKAGE POWER-FLEX (KTE) SOT-223 (DCY) TO-220 (KC/KCS) BOARD High JESD 51-5 High JESD 51-7 High JESD 51-5 3°C/W 4°C/W 3°C/W 23°C/W 53°C/W 19°C/W
NOTE Maximum power dissipation function TJ(max), maximum allowable power dissipation allowable ambient temperature (TJ(max) TA)/JA. Operating absolute maximum 150°C affect reliability.
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LM317 3-TERMINAL ADJUSTABLE REGULATOR
recommended operating conditions
Input-to-output voltage differential Output current Operating virtual junction temperature UNIT
electrical characteristics over recommended ranges operating virtual junction temperature (unless otherwise noted)
PARAMETER Line regulation CADJ 25°C 125°C Thermal regulation ADJUST terminal current Change ADJUST terminal current Reference voltage Output-voltage temperature stability Minimum load current maintain regulation Maximum output current output noise voltage Ripple rejection 1500 1500 125°C PMAX (see Note PMAX (see Note 25°C kHZ, 25°C CADJ CADJ 0.15 20-ms pulse, 25°C TEST CONDITIONS 25°C 125°C 0.01 0.02 0.03 1.25 0.003 0.04 0.07 0.07 UNIT %VO/W
Load regulation
1500
Long-term stability 25°C %/1k Unless otherwise noted, following test conditions apply: IOMAX 125°C. Pulse testing techniques used maintain junction temperature close ambient temperature possible. Line regulation expressed here percentage change output voltage change input. CADJ connected between ADJUST terminal GND. NOTE Maximum power dissipation function TJ(max), maximum allowable power dissipation allowable ambient temperature (TJ(max) TA)/JA. Operating absolute maximum 150°C affect reliability.
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LM317 3-TERMINAL ADJUSTABLE REGULATOR
APPLICATION INFORMATION
(Note 1N4002
Input
LM317
Output
(Note
Adjust IAdj Vref 1.25
(Note 1N4002 (Note
(Note
CADJ (Note
NOTES: required, recommended, particularly regulator close proximity power-supply filter capacitors. 0.1-µF disc 1-µF tantalum provides sufficient bypassing most applications, especially when adjustment output capacitors used. improves transient response, needed stability. calculated shown:
Because IAdj typically negligible most applications. CADJ used improve ripple rejection; prevents amplification ripple output voltage adjusted higher. CADJ used, best include protection diodes. input shorted ground during fault condition, protection diodes provide measures prevent possibility external capacitors discharging through low-impedance paths providing low-impedance discharge paths CADJ, respectively, prevent capacitors from discharging into output regulator.
Figure Adjustable Voltage Regulator
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LM317 3-TERMINAL ADJUSTABLE REGULATOR
APPLICATION INFORMATION
LM317 INPUT OUTPUT
ADJUST
calculated
Since IAdj typically negligible most applications.
Adj(R2
Figure 30-V Regulator Circuit
LM317 INPUT OUTPUT 1N4002 (see Note
ADJUST
NOTE discharges output shorted ground.
Figure Adjustable Regulator Circuit With Improved Ripple Rejection
LM317 INPUT OUTPUT limit
ADJUST
Figure Precision Current-Limiter Circuit
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LM317 3-TERMINAL ADJUSTABLE REGULATOR
APPLICATION INFORMATION
ADJUST INPUT OUTPUT
LM317
LM317 OUTPUT INPUT ADJUST
Output Adjust
Figure Tracking Preregulator Circuit
LM317 INPUT OUTPUT
ADJUST
Figure 1.25-V 20-V Regulator Circuit With Minimum Program Current
LM317 INPUT OUTPUT LM317 INPUT OUTPUT LM317 INPUT OUTPUT
ADJUST
ADJUST
ADJUST
Minimum load current from each output output voltages within each other.
Figure Adjusting Multiple On-Card Regulators With Single Control
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LM317 3-TERMINAL ADJUSTABLE REGULATOR
APPLICATION INFORMATION
(see Note
LM317 INPUT OUTPUT
ADJUST
NOTE controls output impedance charger. allows charging rates with fully charged battery.
Figure Battery-Charger Circuit
LM317 INPUT OUTPUT
ADJUST
Figure 50-mA Constant-Current Battery-Charger Circuit
LM317 INPUT OUTPUT 2N2905 1N4002
ADJUST
Figure Slow-Turn-On 15-V Regulator Circuit
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LM317 3-TERMINAL ADJUSTABLE REGULATOR
APPLICATION INFORMATION
LM317 INPUT OUTPUT
ADJUST
VI(PP) ADJUST INPUT OUTPUT
VO(PP) (TYP)
LM317
Figure Voltage-Regulator Circuit
LM317 INPUT OUTPUT
ADJUST
(see Note NOTE sets peak current (0.6 resistor).
Figure Current-Limited Charger Circuit
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LM317 3-TERMINAL ADJUSTABLE REGULATOR
APPLICATION INFORMATION
LM317 INPUT OUTPUT
ADJUST
LM317 INPUT OUTPUT
ADJUST LM317 INPUT OUTPUT
ADJUST TL080
2N2905
Figure Adjustable Regulator Circuit
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LM317 3-TERMINAL ADJUSTABLE REGULATOR
APPLICATION INFORMATION
TIP73
2N2905
LM317 INPUT OUTPUT 1N4002 Note
ADJUST
(see Note
NOTES: minimum load current This optional capacitor improves ripple rejection.
Figure High-Current Adjustable Regulator Circuit
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PACKAGE OPTION ADDENDUM
www.ti.com
4-Mar-2005
PACKAGING INFORMATION
Orderable Device LM317DCY LM317DCYR LM317KC LM317KCS LM317KTER
Status ACTIVE ACTIVE ACTIVE ACTIVE ACTIVE
Package Type SOT-223 SOT-223 TO-220 TO-220
Package Drawing
Pins Package Plan 2500 2000 None None None None None
Lead/Ball Finish Call Call Call Call Call
Peak Temp Level-2-235C-1 YEAR Level-2-235C-1 YEAR Level-1-220C-UNLIM Level-NC-NC-NC Level-1-220C-UNLIM
marketing status values defined follows: ACTIVE: Product device recommended designs. LIFEBUY: announced that device will discontinued, lifetime-buy period effect. NRND: recommended designs. Device production support existing customers, does recommend using this part design. PREVIEW: Device been announced production. Samples available. OBSOLETE: discontinued production device.
Plan currently available please check latest availability information additional product content details. None: available Lead (Pb-Free). Pb-Free (RoHS): TI's terms "Lead-Free" "Pb-Free" mean semiconductor products that compatible with current RoHS requirements substances, including requirement that lead exceed 0.1% weight homogeneous materials. Where designed soldered high temperatures, Pb-Free products suitable specified lead-free processes. Green (RoHS Sb/Br): defines "Green" mean "Pb-Free" addition, uses package materials that contain halogens, including bromine (Br) antimony (Sb) above 0.1% total product weight.
MSL, Peak Temp. Moisture Sensitivity Level rating according JEDECindustry standard classifications, peak solder temperature. Important Information Disclaimer:The information provided this page represents TI's knowledge belief date that provided. bases knowledge belief information provided third parties, makes representation warranty accuracy such information. Efforts underway better integrate information from third parties. taken continues take reasonable steps provide representative accurate information have conducted destructive testing chemical analysis incoming materials chemicals. suppliers consider certain information proprietary, thus numbers other limited information available release. event shall TI's liability arising such information exceed total purchase price part(s) issue this document sold Customer annual basis.
Addendum-Page
MECHANICAL DATA
MPDS094A APRIL 2001 REVISED JUNE 2002
(R-PDSO-G4)
PLASTIC SMALL-OUTLINE
6,70 (0.264) 6,30 (0.248) 3,10 (0.122) 2,90 (0.114) 0,10 (0.004)
7,30 (0.287) 6,70 (0.264)
3,70 (0.146) 3,30 (0.130)
Gauge Plane 2,30 (0.091) 4,60 (0.181) 0,84 (0.033) 0,66 (0.026) 0,10 (0.004) 0°-10° 0,25 (0.010)
0,75 (0.030)
1,80 (0.071)
1,70 (0.067) 1,50 (0.059) 0,35 (0.014) 0,23 (0.009) Seating Plane
0,10 (0.0040) 0,02 (0.0008)
0,08 (0.003)
4202506/B 06/2002 NOTES: linear dimensions millimeters (inches). This drawing subject change without notice. Body dimensions include mold flash protrusion. Falls within JEDEC TO-261 Variation
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MECHANICAL DATA
MPFM001E OCTOBER 1994 REVISED JANUARY 2001
(R-PSFM-G3)
0.375 (9,52) 0.365 (9,27) 0.360 (9,14) 0.350 (8,89) 0.220 (5,59)
PowerFLEXPLASTIC FLANGE-MOUNT
0.080 (2,03) 0.070 (1,78) 0.050 (1,27) 0.040 (1,02) 0.010 (0,25)
0.295 (7,49) 0.420 (10,67) 0.410 (10,41)
0.360 (9,14) 0.350 (8,89) 0.320 (8,13) 0.310 (7,87)
Thermal (See Note
0.025 (0,63) 0.031 (0,79) Seating Plane 0.004 (0,10) 0.005 (0,13) 0.001 (0,03)
0.100 (2,54) 0.200 (5,08)
0.010 (0,25)
0.010 (0,25) Gage Plane
0.041 (1,04) 0.031 (0,79)
0.010 (0,25) 4073375/F 12/00 NOTES: linear dimensions inches (millimeters). This drawing subject change without notice. center lead electrical contact with thermal tab. Dimensions include mold protrusions, exceed 0.006 (0,15). Falls within JEDEC MO-169
PowerFLEX trademark Texas Instruments.
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IMPORTANT NOTICE Texas Instruments Incorporated subsidiaries (TI) reserve right make corrections, modifications, enhancements, improvements, other changes products services time discontinue product service without notice. Customers should obtain latest relevant information before placing orders should verify that such information current complete. products sold subject TI's terms conditions sale supplied time order acknowledgment. warrants performance hardware products specifications applicable time sale accordance with TI's standard warranty. Testing other quality control techniques used extent deems necessary support this warranty. Except where mandated government requirements, testing parameters each product necessarily performed. assumes liability applications assistance customer product design. Customers responsible their products applications using components. minimize risks associated with customer products applications, customers should provide adequate design operating safeguards. does warrant represent that license, either express implied, granted under patent right, copyright, mask work right, other intellectual property right relating combination, machine, process which products services used. Information published regarding third-party products services does constitute license from such products services warranty endorsement thereof. such information require license from third party under patents other intellectual property third party, license from under patents other intellectual property Reproduction information data books data sheets permissible only reproduction without alteration accompanied associated warranties, conditions, limitations, notices. Reproduction this information with alteration unfair deceptive business practice. responsible liable such altered documentation. Resale products services with statements different from beyond parameters stated that product service voids express implied warranties associated product service unfair deceptive business practice. responsible liable such statements. Following URLs where obtain information other Texas Instruments products application solutions: Products Amplifiers Data Converters Interface Logic Power Mgmt Microcontrollers amplifier.ti.com dataconverter.ti.com dsp.ti.com interface.ti.com logic.ti.com power.ti.com microcontroller.ti.com Applications Audio Automotive Broadband Digital Control Military Optical Networking Security Telephony Video Imaging Wireless Mailing Address: Texas Instruments Post Office 655303 Dallas, Texas 75265 Copyright 2005, Texas Instruments Incorporated www.ti.com/audio www.ti.com/automotive www.ti.com/broadband www.ti.com/digitalcontrol www.ti.com/military www.ti.com/opticalnetwork www.ti.com/security www.ti.com/telephony www.ti.com/video www.ti.com/wireless
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