MC34063D

MC34063D DC/DC Converter Control Circuits DESCRIPTION The MC34063D is a monolithic control circuit containing the primary functions required for DC-to-DC converter. This device consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. Employing a minimum number of external components, the MC34063D is designed for Step-Down, Step-Up and Voltage-Inverting applications. FEATURES ¨ ¨ ¨ ¨ ¨ ¨ ¨ Operation from 3V to 40V Active Current Limiting Low Quiescent Current: 3mA Output Switch Current in Excess of 1.5A Adjustable Output Voltage Frequency Operation to 100 kHz 2% Reference Accuracy PIN CONFIGURATION – Top View 8L SOIC 8L PDIP 8 Driver Collector Switch Collector Switch Emitter 1 2 3 4 8 Driver Collector 7 Ipk Sense 6 VCC 5 Comparator Inverting Input Switch Collector 1 Switch Emitter 2 Timing Capacitor 3 GND 4 7 Ipk Sense 6 VCC 5 Comparator Inverting Input Timing Capacitor GND PACKAGE TOP MARKING: (For 8L SOIC/PDIP) MC34063 FYMXXXS GYYWW Line 1: Device Line 2: Lot No. Code F – Foundry Code (G) YMXXX – 5 Character Lot No. S – Split Code Line 3: Date Code G – Assembly Vendor Code YY – Year WW – Workweek ORDERING INFORMATION MC34063D D8 13 Circuit Type: DC/DC Converter Control Circuits Package Style: D8 = SOIC/8L N8 = PDIP/8L Packaging Option: T = Tube 13 = Tape and Reel (13” Reel Dia) Silicon Link Inc. www.silicon-link.com 1 March 2010 Rev. 2 M...