34063 - Estek Electronics

34063 monolithic control circuit containing the primary functions required

The MC34063A Series is a monolithic control circuit containing the primary functions required for DC-to-DC converters. These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This series was specifically designed to be www.

Features

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• 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 kHz Precision 2% Reference Plastic Package Pin Connections Internal Block Digram Driver Collector 1 S R Ipk Sense Ipk Oscillator Comparator 1.25 V Reference 4 Gnd CT 7 100 2 3 VCC Comparator Inverting Input 6 Switch Emitter Timing Capacitor Q Q2 Q1 8 Switch Collector 5 BEIJING ESTEK ELECTRONICS CO.,LTD 1 34063 Absolute Maximum Ratings Symbol VCC Power Supply Voltage VIR Comparator Input Voltage Range www.datasheet4u.c.