LM317

JIANGSU CHANGJIANG ELECTRONICS TECHNOLOGY CO., LTD TO-263-2L Plastic-Encapsulate Voltage Regulators LM317 Three-terminal positive voltage regulator TO-263-2L DESCRIPTION This monolithic integrated circuit is an adjustable 3-terminal positive voltage regulator designed to supply more than 1.5A of load current with an output voltage adjustable over a 1.2 to 37V. It employs internal current limiting , thermal shut-down and safe area compensation. 1. Adj 2. Output 3. Input 123 FEATURE z Internal thermal overload protection z Internal short circuit current limiting Output transistor safe operating area compensation z Internal Block Diagram Vin 3 Input + - Protection Circuitry Voltage Reference Rlimit 2 Vo Output 1 Vadj www.cj-elec.com 1 C,Mar,2016 Absolute Maximum Ratings Symbol Parameter Value Unit VI-VO Input-Output Voltage Differential 40 V TLEAD Lead Temperature 230 ℃ PD Power Dissipation Internally limited W TJ Operating Junction Temperature Range Tstg Storage Temperature Range ΔVO /ΔT 0~125 ℃ -55~125 Temperature Coefficient of Output Voltage %/℃ ±0.02 ELECTRICAL CHARACTERISTICS (VO-VI=5V,IO=0.5A,0℃≤TJ≤+125℃,IMAX=1.5A,PDMAX=20W,unless otherwise specified) Parameter Line Regulation(note1) Load Regulation(note1) Adjustable Pin Current Symbol Rline Rload Test ΔlADJ Reference Voltage VREF Temperature Stability STT MIN TA=25℃ 3V≤VI-VO≤40V 3V≤VI-VO≤40V TA=25℃, 10mA≤IO≤IMAX VO