LM317
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UNISONIC TECHNOLOGIES CO., LM317
HIGH CURRENT 1.3V ADJUSTABLE VOLTAGE REGULATOR
LM317 adjustable 3-terminal positive voltage regulator, designed supply output current with voltage adjustable from 1.3V 37V.
LINEAR INTEGRATED CIRCUIT
TO-220
TO-220F
TO-263
TO-252
FEATURES
*Output voltage adjustable from 1.3V *Output current excess *Internal short circuit protection. *Internal over temperature protection. *Output transistor safe area compensation
SOT-223
TO-3
Lead-free: LM317K Halogen-free: LM317G
ORDERING INFORMATION
Ordering Number Normal Lead Free LM317-AA3-R LM317K-AA3-R LM317-TA3-T LM317K-TA3-T LM317-TF3-T LM317K-TF3-T LM317-TN3-R LM317K-TN3-R LM317-TN3-T LM317K-TN3-T LM317-TQ2-R LM317K-TQ2-R LM317-TQ2-T LM317K-TQ2-T LM317-T30-Y LM317K-T30-Y Note: Assignment: I:VIN O:VOUT TO-3 case LM317K-AA3-R (1)Packing Type (2)Package Type (3)Lead Plating Tape Reel, Tube, Tray AA3: SOT-223, TA3: TO-220, TF3: TO-220F, TN3: TO-252, TQ2: TO-263, T30: TO-3 Halogen Free, Lead Free, Blank: Pb/Sn Halogen Free LM317G-AA3-R LM317G-TA3-T LM317G-TF3-T LM317G-TN3-R LM317G-TN3-T LM317G-TQ2-R LM317G-TQ2-T LM317G-T30-Y Package SOT-223 TO-220 TO-220F TO-252 TO-252 TO-263 TO-263 TO-3 Assignment Packing Tape Reel Tube Tube Tape Reel Tube Tape Reel Tube Tray
www.unisonic.com.tw Copyright 2008 Unisonic Technologies Co.,
QW-R101-009,K
LM317
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R101-009,K
LM317
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (Ta=25°C, unless otherwise specified)
PARAMETER SYMBOL RATINGS UNIT Input Output Voltage Difference VIN-VOUT Power Dissipation Internal limited Junction Temperature +125 Operating Temperature TOPR +125 Storage Temperature TSTG +150 Note:1. Absolute maximum ratings stress ratings only functional device operation implied. device could damaged beyond Absolute maximum ratings.
THERMAL DATA
PARAMETER TO-252 TO-220/TO-220F TO-263 SOT-223 TO-3 TO-252 TO-220/TO-220F TO-263 SOT-223 TO-3 SYMBOL RATINGS UNIT
Junction-to-Ambient
Junction-to-Case
ELECTRICAL CHARACTERISTICS
(VIN-VOUT=5V, IOUT=10mA, Ta=25°C, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS Line Regulation VOUT/VOUT 3VVIN-VOUT40V VOUT5V Load Regulation VOUT 10mAIOUT1A VOUT5V Adjustable Current Adjustable Current Change Reference Voltage Temperature Stability Minimum Load Current Regulation Maximum Output Current Noise VOUT Ripple Rejection IADJ IADJ VREF IL(MIN) IO(MAX) 3VVIN-VOUT40V, 10mAIOUT1A, PD20W 3VVIN-VOUT40V, 10mAIOUT1A, PD20W TMINTJTMAX VIN-VOUT=40V VIN-VOUT=40V, PD20W 10HZf10KHZ VOUT=10V,f=120HZ CADJ=0 CADJ=10F 0.01 1.20 1.25 0.003 0.04 1.30 UNIT %/VOUT %/VOUT
Note: CADJ connected between Adjust Ground.
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R101-009,K
LM317
APPLICATION CIRCUITS
LINEAR INTEGRATED CIRCUIT
LM317
VADJ
1N4001
VOUT
LM317
IOUT VoUT
IADJ 1.25V VREF )+IADJ=
IO(MAX)=( IO(MIN)=(
VREF 1.25V )+IADJ= R1+R2 R1+R2
5mA<IOUT<100mA
Fig.3 Soft Start Application
Fig.4 Constant Current Application
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R101-009,K
LM317
TYPICAL CHARACTERISTICS
Load Regulation temperature
LINEAR INTEGRATED CIRCUIT
Adjustment Current Temperature
Output Voltage Deviation, VOUT
Adjustment Current, IADJ
-0.2 -0.4 -0.6 -0.8 -1.0 VIN=15V VOUT=10V
Temperature
Temperature
assumes responsibility equipment failures that result from using products values that exceed, even momentarily, rated values (such maximum ratings, operating condition ranges, other parameters) listed products specifications products described contained herein. products designed life support appliances, devices systems where malfunction these products reasonably expected result personal injury. Reproduction whole part prohibited without prior written consent copyright owner. information presented this document does form part quotation contract, believed accurate reliable changed without notice.
UNISONIC TECHNOLOGIES CO.,
www.unisonic.com.tw
QW-R101-009,K
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