isc Product Specification INCHANGE Semiconductor isc Adjustable Voltage Regulator LM317 FEATURES ·Output Voltage Range :1.2V to 37V ·Output Current in Excess of 1.5A ·0.1% Line and Load Regulation ·Floating Opearation for High Voltages ·Complete Series of Protections: Current Limiting, Thermal Shutdown and SOA Control DESCRIPTION ·They are designed to supply more than 1.5A of load current with an output voltage adjustable over a 1.2 to 37V range. ·The nominal output voltage is selected by means of only a resistive divider,making the device exceptionally easy to use and eliminating the stocking of many fixed regulators. ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER VALUE UNIT Vi -Vo Input-output Differential Voltage 40 V IO Output Current Internally Limited A PD Power Dissipation Internally Limited W TOP Operating Junction Temperature 0~125 ℃ TSTG Storage Temperature -65~+125 ℃ THERMAL CHARACTERISTICS SYMBOL PARAMETER MAX UNIT Rth j-c Thermal Resistance, Junction to Case 3 ℃/W Rth j-a Thermal Resistance,Junction to Ambient 50 ℃/W isc website：www.iscsemi.cn 1 isc & iscsemi is registered trademark isc Product Specification INCHANGE Semiconductor isc Adjustable Voltage Regulator LM317 ·ELECTRICAL CHARACTERISTICS (Vi-Vo=5V,IO=0.5A,IMAX=1.5A,PMAX=20W,unless otherwise specified) SYMBOL PARAMETER CONDITIONS △VO Line Regulation Vi -Vo= 3V to 40V;IO=10mA to 1.5A SVR Ripple Rejection Vo= 10V; f= 120Hz, CADJ= 10μF △VO Io (min) IO (max) MIN TYP. MAX UNIT 0.07 ％/ V 66 dB IO= 10mA to 1.5A;Vo≤5V ；Tj = 25 oC 25 mV IO= 10mA to 1.5A;Vo>5V ；Tj = 25 oC 0.5 % Vi - Vo = 40 V 10 mA Load Regulation Minimum Load Current Vi - Vo ≤ 15 V 1.5 A Vi - Vo = 40 V;Tj = 25 oC 0.15 A Maximum Load Current IADJ Adjustment Pin Current Vi -Vo= 5V ;IO= 500mA △IADJ Adjustment Pin Current Vi -Vo= 2.5V to 40V;IO= 10mA to1.5A VREF Reference Voltage Vi -Vo= 3V to 40V ; IO= 10mA to 1.5A, P≤15W isc website：www.iscsemi.cn 2 1.2 1.25 100 μA 5 μA 1.3 V isc & iscsemi is registered trademark