3-TERMINAL 1.5A POSITIVE ADJUSTABLE VOLTAGE REGULATOR Description The LM317S is an adjustable 3-termial positive voltage regulator, designed to supply more than 1.5A of output current with voltage adjustable from 1.3 to 37V. Features Output current up to 1.5A. Output voltage adjustable from 1.3V to 37V. Internal short circuit protection. Internal over temperature protection. Safe-Area compensation for output transistor. Package Dimensions Millimeter REF. A b L4 c L3 L1 E Min. Max. 4.40 4.80 0.76 1.00 0.00 0.30 B 0.36 0.5 1.50 REF. 2.29 2.79 9.80 10.4 Millimeter REF. c2 b2 D e L L2 Min. Max. 1.25 1.45 1.17 1.47 8.6 9.0 2.54 REF. 14.6 15.8 0˚ 8˚ 1.27 REF. Block Diagram Absolute Maximum Ratings at Ta = 25 Parameter Symbol Ratings Unit V Input-Output Voltage Difference Vi-Vo 40 Load Temperature Tlead 230 Power Dissipation PD Internal limited Operating Temperature Range Topr 0 ~ +125 Storage Temperature Range Tstg -65 ~ +150 3-TERMINAL 1.5A POSITIVE ADJUSTABLE VOLTAGE REGULATOR Electrical Characteristics (Vi-Vo=5V, 0 Parameter Line Regulation < Tj <125 , Io=500mA, IMax=1.5A, PMax=20W, unless otherwise specified) Symbol Vo Test Conditions Ta=25 Ta=0~125 , 3V Vi-Vo , 3V Load Regulation Adjustable Pin Current Adjustable Pin Current Change Reference Voltage Temperature Stability Minimum Load Current for Regulation Vo 10mA Io IMax IADJ VREF RMS Noise v.s. % of Vout eN Ripple Rejection RR Long-term Stability, Tj=Thigh ST Vi-Vo 15V, PD Ta=25 0.04 %/V 0.07 %/V 18 25 mV 0.5 %/Vo Vo 5V - 40 70 mV Vo 6V - 0.8 1.5 %/Vo - 46 100 A - 2.0 5 A 1.225 1.25 1.275 V - 0.7 - %/Vo mA PMax 3.5 10 2.2 - 0.15 0.4 - A - 0.003 0.01 - 60 - Vo=10V, f=120Hz, Cadj=10 F 66 75 - - 0.3 1 % - 5 - /W R jc *Note: Testing with low duty pulse should be used to avoid heating effect. 10KHz 1.5 Vo=10V, f=120Hz Ta=25 f 0.01 0.02 0.4 PMax Ta=25 , 10Hz - Vi-Vo=40V Vi-Vo 15V, PD Unit - 3V Vi-Vo 40V, Io IMax, PD PMax IL(Min) Max Vo 5V 2.5V Vi-Vo 40V, 10mA Io IMax, PD PMax 10mA TYP Vo 6V STT Io(Max) Characteristics Curve 40V IADJ Maximum Output Current Junction to Case Thermal Resistance Io IMax 40V Vi-Vo< Ta=25 10mA Min ,1000hr - %/Vo dB 3-TERMINAL 1.5A POSITIVE ADJUSTABLE VOLTAGE REGULATOR LM317S LM317S LM317S LM317S