TIGER ELECTRONIC CO.,LTD Product specification LM317 3-Terminal Positive Adjustable Regulator Features Description This monolithic integrated circuit is an adjustable 3-terminal positive voltage regulator designed to supply more than 1.5A of load current with anoutput voltage adjustable over a 1.2 to 37V. It employs internal current limiting, thermal shut-down and safe area compensation. Output Current In Excess of 1. 5A Output Adjustable Between 1. 2V and 37V Internal Thermal Overload Protection Internal Short Circuit Current Limiting Output Transistor Safe Operating Area Compensation TO-220 Package O Absolute Maximum Ratings ( Ta = 25 C) Parameter Symbol Typ Unit Input-Output Voltage Differential VI -VO 40 V Lead Temperature TLEAD 230 Power Dissipation PD Internally li mited Operating Junction Temperature Range Tj 0~125 o Storage Temperature Range TSTG -65~150 o Temperature Coefficient of Output Voltage Vo/ T o C W C 1 2 3 C TO-220 %/oC 0.02 1. Adj 2. Output 3. Input Electrical Characteristics ( Ta = 25 OC) o (VI - VO= 5 V, IO= 0.5 A, 0 C TJ Parameter Line Regulation (Note1) o + 125 C, IMAX = 1.5A,PDMAX = 20W, unless otherwise specified) Symbol Rline Test Conditions TA = +25oC 3V VI - VO 3V VI - VO 40V 40V o Load Regulation (Note1) Adjustable Pin Current Adjustable Pin Current Change Reference Voltage Maximum Output Current Ripple Rejection Rload TA = +25 C, 10mA VO < 5V VO 5V 10mA IO IMAX VO < 5V VO 5V IADJ IO IMAX - Min Typ Max Unit - 0.01 0.04 - 0.02 0.07 - 18 0.4 25 0.5 - 40 0.8 70 1.5 - 46 100 A A %/V mV % / VO IADJ 3V VI - VO 40V 10mA IO IMAX PD - 2.0 5 VREF 3V VIN - VO 40V 10mA IO IMAX PD PMAX 1.20 1.25 1.30 V VI - VO VI - VO 1.0 2.0 0.3 - A - dB IO(MAX) RR 15V, PD 40V, PD PMAX PMAX PMAX VO = 10V, f = 120Hz without CADJ CADJ = 10 F (Note2) 66 60 75 Note: 1. Load and line regulation are specified at constant junction temperature. Change in VD due to heating effects must be taken into account separately. Pulse testing with low duty is used. (PMAX = 20W) 2. CADJ, when used, is connected between the adjustment pin and ground.