SL34063A Datasheet | System Logic Semiconductor

SL34063A DC-TO-DC CONVERTER CONTROL CIRCUITS The SL34063A is a monolithic control circuit containing the primary functions required for DC-to-DC converters. These devices consist of an internal temperature pensated reference, parator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This series was specifically designed to be incorporated in Step-Down and Step-Up and Voltage-Inverting applications with a minimum number of external ponents. Features FUNCTIONAL BLOCK DIAGRAM - - - - - - - Operation from 3.0 V to 40 V Input Low Standby Current Current Limiting Output Switch Current to 1.5 A Output Voltage Adjustable Frequency Operation to 100 k Hz Precision 2% Reference MAXIMUM RATINGS Rating Power Supply Voltage parator Input Voltage Range Switch Collector Voltage Switch Emitter Voltage (Vpin 1 = 40 V) Switch Collector to Emitter Voltage Driver Collector Voltage Driver Collector Current (Note 1) Switch Current Power Dissipation and Thermal Characteristics Ceramic Package, U Suffix TA = +25°C Thermal Resistance Plastic Package, P Suffix TA = +25°C Thermal Resistance SOIC Package, D Suffix TA = +25°C Thermal Resistance Operating Junction Temperature Operating Ambient Temperature Range Storage Temperature Range Symbol VCC VIR VC(switch) VE(switch) VCE(switch) IC(driver) IC(driver) ISW PD RθJA PD RθJA PD RθJA Value Unit 40 Vdc -0.3 to +40 Vdc 40 Vdc 40 Vdc 40 Vdc 40 Vdc 100 m A 1.5 A 1.25 100 1.25 100 625 160 +150 0 to +70 -65to+150 W °C/W W °C/W m W °C/ W °C °C °C TA Tstg System Logic Semiconductor ORDERING INFORMATION Device Temperature Range Package 34063AD 0° to +70°C SO-8 34063AP1 Plastic DIP Pin connection ELECTRICAL CHARACTERICISTICS (V CC = 5.0 V, TA= 0 to +70o C unless otherwise specified.) Characteristics Symbol OSCILLATOR Frequency (V Pin 5 = 0 V, CT = 1.0 n F, TA = 25°C) fosc Charge Current (V CC = 5.0 V to 40 V, TA = 25°C) Ichg Discharge Current (V CC = 5.0 V to...