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UNISONIC TECHNOLOGIES CO., LTD LM317
HIGH CURRENT 1.3V TO 37V ADJUSTABLE VOLTAGE REGULATOR
DESCRIPTION
The UTC LM317 is an adjustable 3-terminal positive voltage regulator, designed to supply 1A of output current with voltage adjustable from 1.3V ~ 37V.
LINEAR INTEGRATED CIRCUIT
1 TO-220
1 TO-220F
1 TO-263
1 TO-252
FEATURES
*Output voltage adjustable from 1.3V ~ 37V *Output current in excess of 1A *Internal short circuit protection. *Internal over temperature protection. *Output transistor safe area compensation
1 SOT-223 2 1
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: 1. Pin Assignment: I:VIN O:VOUT 2. Pin 3 on TO-3 is case LM317K-AA3-R (1)Packing Type (2)Package Type (3)Lead Plating (1) R: Tape Reel, T: Tube, Y: Tray (2) AA3: SOT-223, TA3: TO-220, TF3: TO-220F, TN3: TO-252, TQ2: TO-263, T30: TO-3 (3) G: Halogen Free, K: 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 Pin Assignment 1 2 3 ADJ O I ADJ O I ADJ O I ADJ O I ADJ O I ADJ O I ADJ O I I ADJ O Packing Tape Reel Tube Tube Tape Reel Tube Tape Reel Tube Tray
www.unisonic.com.tw Copyright (c) 2008 Unisonic Technologies Co., Ltd
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LM317
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 5 QW-R101-009,K
LM317
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (Ta=25C, unless otherwise specified)
PARAMETER SYMBOL RATINGS UNIT Input - Output Voltage Difference VIN-VOUT 40 V Power Dissipation PD Internal limited Junction Temperature TJ +125 C Operating Temperature TOPR -40 ~ +85 C Storage Temperature TSTG -40 ~ +150 C Note:1. Absolute maximum ratings are stress ratings only and functional device operation is not implied. The device could be 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 112 54 64 165 35 12 5 5 23 3 UNIT
Junction-to-Ambient
JA
/W
Junction-to-Case
JC
/W
ELECTRICAL CHARACTERISTICS
(VIN-VOUT=5V, IOUT=10mA, Ta=25C, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS Line Regulation VOUT/VOUT 3VVIN-VOUT40V VOUT5V Load Regulation VOUT 10mAIOUT1A VOUT5V Adjustable Pin Current Adjustable Pin Current Change Reference Voltage Temperature Stability Minimum Load Current for Regulation Maximum Output Current RMS Noise vs. %of VOUT Ripple Rejection IADJ IADJ VREF IL(MIN) IO(MAX) eN RR 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 MIN TYP 0.01 5 0.1 50 0.2 1.20 1.25 0.7 3.5 0.3 0.003 65 80 MAX 0.04 25 0.5 100 5 1.30 10 UNIT %/V mV % A A V %/VOUT mA A %/VOUT dB
0.2
66
Note: CADJ is connected between Adjust pin and Ground.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3 of 5 QW-R101-009,K
LM317
APPLICATION CIRCUITS
LINEAR INTEGRATED CIRCUIT
VIN 3
UTC LM317
1 VADJ
2
D1 1N4001 50k
VOUT
VIN
3
UTC LM317
1
2
R1
R2
IOUT VoUT
240
IADJ 1.25V VREF )+IADJ= R1 R1
R2 10 F IO(MAX)=( IO(MIN)=(
VREF 1.25V )+IADJ= R1+R2 R1+R2
5mAFig.3 Soft Start Application
Fig.4 Constant Current Application
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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LM317
TYPICAL CHARACTERISTICS
Load Regulation vs. temperature
0.2
LINEAR INTEGRATED CIRCUIT
Adjustment Current vs. Temperature
60
Output Voltage Deviation, VOUT (%)
Adjustment Current, IADJ (A)
125
0.0 -0.2 -0.4 -0.6 -0.8 -1.0 0 25 50 75 100 VIN=15V VOUT=10V
55
50
45
40
35 -50
-25
0
25
50
75
100
125
Temperature
Temperature
UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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