MC34063A

Inverting Regulator - Buck, Boost, Switching 1.5 A MC34063A, MC33063A, SC33063A, NCV33063A 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 incorporated in Step−Down and Step−Up and Voltage−Inverting applications with a minimum number of external components. Refer to Application Notes AN920A/D and AN954/D for additional design information. Features 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 NCV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant Drive 8 Collector S Q Q2 1 Switch Collector Ipk 7 Sense R 100 Ipk Oscillator CT Q1 2 Switch Emitter 6 VCC Comparator 5 Inverting Input Comparator + - 1.25 V Reference Regulator (Bottom View) 3 Timing Capacitor 4 GND This device contains 79 active transistors. Figure 1. Representative Schematic Diagram DATA SHEET www.onsemi.com 8 1 SOIC−8 D SUFFIX CASE 751 MARKING DIAGRAMS 8 3x063 ALYWA G 1 8 3x063V ALYWA ...