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| UNISONIC TECHNOLOGIES CO., LTD LM317L LOW CURRENT 1.25V TO 37V ADJUSTABLE VOLTAGE REGULATOR DESCRIPTION The UTC LM317L is a monolithic integrated circuit, designed to supply 100mA of output current with voltage adjustable from 1.25V ~ 37V. 1 SOP-8 LINEAR INTEGRATED CIRCUIT FEATURES *Output voltage adjustable from 1.25V ~ 37V. *Output current in excess of 100mA *Internal thermal overload protection *Internal short circuit current limiting *Output transistor safe area compensation TO-92 Lead-free: LM317LK Halogen-free: LM317LG ORDERING INFORMATION Normal LM317L-T92-B LM317L-T92-K LM317L-S08-R LM317L-S08-T Ordering Number Lead Free LM317LK-T92-B LM317LK-T92-K LM317LK-S08-R LM317LK-S08-T I:VIN O:VOUT Halogen Free LM317LG-T92-B LM317LG-T92-K LM317LG-S08-R LM317LG-S08-T N: No Connection Package TO-92 TO-92 SOP-8 SOP-8 1 A A I I Pin Assignment 234567 OI---OI---OOANOO OOANOO Packing 8 - Tape Box Bulk N Tape Reel N Tube Note: Pin Assignment: A:ADJ www.unisonic.com.tw Copyright (c) 2008 Unisonic Technologies Co., Ltd 1 of 5 QW-R101-008.D LM317L BLOCK DIAGRAM LINEAR INTEGRATED CIRCUIT INPUT VREF PROTECTION CIRCUIT OUTPUT VADJ UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R101-008.D LM317L ABSOLUTE MAXIMUM RATINGS LINEAR INTEGRATED CIRCUIT PARAMETER SYMBOL RATING UNIT Input-Output Differential Voltage VIN-VOUT 40 V Power Dissipation PD Internally Limited Junction Temperature TJ +125 C Operating Junction Temperature TOPR -40 ~ +85 C Storage Temperature Range TSTR -40 ~ +150 C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. ELECTRICAL CHARACTERISTICS (VIN-VOUT=5V, IOUT=40mA, Ta=25C, unless otherwise specified.) PARAMETER SYMBOL TEST CONDITIONS Line Regulation VOUT/VOUT 3VVIN-VOUT40V, ILOAD<20mA VOUT5V Load Regulation VOUT 5mAIOUT100mA 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 IADJ IADJ VREF 3VVIN-VOUT40V, 5mAIOUT100mA, PD625mW 3VVIN-VOUT40V, 5mAIOUT100mA, PD625mW TMINTJTMAX MIN TYP MAX UNIT 0.01 0.04 %/V 5 25 mV 0.1 0.5 % 50 100 A 0.2 5 A V 1.20 1.25 1.30 VIN-VOUT=40V VIN-VOUT=40V, PD625mW 10HZf10KHZ CADJ=0 Ripple Rejection RR VOUT=10V,f=120HZ, CADJ =10F Note: CADJ is connected between Adjust pin and Ground. IL(MIN) IO(MAX) eN 66 0.7 %/VOUT 3.5 10 mA 50 mA 0.003 0.01 %/VOUT 65 dB 80 dB UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 5 QW-R101-008.D LM317L APPLICATION CIRCUITS LINEAR INTEGRATED CIRCUIT VIN 3 VOUT UTC LM317L 2 1 VADJ 240 50k R2 10 F D1 1N4001 VIN 3 UTC LM317L 2 1 R1 R2 IOUT VoUT IADJ 1.25V VREF )+IADJ= R1 R1 IO(MAX)=( IO(MIN)=( VREF 1.25V )+IADJ= R1+R2 R1+R2 5mA Fig.4 Constant Current Application UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 5 QW-R101-008.D LM317L 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 5 of 5 QW-R101-008.D |
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