IP34063 Datasheet | Seme LAB

FEATURES - - - - - - - Operation from 2.5 to 40V input Low Standby Current Current Limiting Output switch current of 1.5A Output voltage adjustable from 1.25 to 40V Operating frequency from 100Hz to 100k Hz Direct replacement for MC34063/MC34063A series VC C C OMP AR ATOR INVER TIN G INPUT J Package - 8 Pin Ceramic DIP N Package - 8 Pin Plastic DIP D-8 Package - 8 Pin Plastic (150) SOIC Order Information Part Number IP35063 IP33063 IP34063 J- Pack 8 Pin N- Pack 8 Pin D- 8 8 Pin Temp. Range -55 to +125°C -40 to +85°C 0 to +70°C Note: To order, add the package identifier to the part number. eg. IP35063D- 8 ABSOLUTE MAXIMUM RATINGS Power Supply Voltage parator Input Voltage Range Switch Collector Voltage Switch Emitter Voltage Switch Collector to Emitter Voltage Driver Collector Voltage Switch Current Power Dissipation @ Tamb = 25°C Derate above 25°C Operating Junction Temperature Ceramic Packages Plastic Packages Ceramic Packages Plastic Packages +40V - 0.3V to +40V 40V 40V 40V 40V 1.5A 1.25W 1W 10m W/°C 150°C 125°C See Table Above - 65 to 150°C Prelim. 2/95 Operating Ambient Temperature Range See Table Above Storage Temperature Range Semelab plc. Telephone (01455) 556565. Telex: 341927. Fax (01455) 552612. IP35063 IP33063 IP34063 DESCRIPTION The IP34063 series of control circuits contains all the functions required to implement DC- DC converters. Included are internal voltage reference, parator, controlled duty cycle oscillator with current limit circuit, driver, and high current output switch. This series was specifically designed to be incorporated in Step-Down (Buck) and Step-Up (Boost) applications with a minimum number of external ponents. Driver Collector Switch Collector S R 7 Ipk Sense OSCILLATOR Q2 Q1 170 Ω 2 Switch Emitter 6 V CC PARATOR 1.25 V REFERENCE REGULATOR parator Inverting Input 5 Timing Capacitor 4 Gnd ELECTRICAL CHARACTERISTICS Parameter (Test Parameters unless otherwise stated : VCC = 5V , TJ = 25°C) Min. 20 150 Typ. 35 200...