LM317T

UMW R UMW LM317 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. TO-220-3L FEATURE  Internal thermal overload protection  Internal short circuit current limiting  Output transistor safe operating area compensation TO-252 1. Adj 2. Output 3. Input SOT-223 Internal Block Diagram Vin 3 Input + Protection Circuitry Voltage Reference Rlimit 2 Vo Output 1 Vadj www.umw-ic.com 1 友台半导体有限公司 UMW R UMW LM317 Absolute Maximum Rating s Symbol Parameter Value Unit VI-VO Input-Output Voltage Differential 40 V TLEAD Lead Temperature 230 ℃ TO-220 Power Dissipation PD Internally limited TO-252 2 SOT-223 1 TJ Operating Junction Temperature Range 0~125 Tstg Storage Temperature Range -55~125 Temperature Coefficient of Output Voltage ΔVO /ΔT W ℃ %/℃ ±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 Test conditions Rline Rload TYP MAX TA=25℃ 3V≤VI-VO≤40V 0.01 0.04 3V≤VI-VO≤40V 0.02 0.07 TA=25℃ , 10mA≤ IO≤ IMAX VO< 5V VO ≥5V 10mA≤ IO≤ IMAX 18 0.4 25 0.5 VO