MC34063A

MC34063A DC/DC CONVERTER CONTROL CIRCUIT SPEC NO: DS34063A-00 ! FEATURES " " " " " " ! DESCRIPTION The MC34063A by Analog Integrations Corporation, an improved second source over the industrial standard MC34063A, is a monolithic control circuit containing the primary functions required reference, for DC/DC converters. controlled The duty device cycle consists of an internal temperature compensated comparator, oscillator with an active current limit circuit, driver and high current output switch. This device is specifically designed to be incorporated in stepdown, step-up and voltage-inverting applications with a minimum number of external components. The ±1.8% internal reference and low quiescent current of 1.6mA are among the improvements of the device over the competition. 3V to 30V Input Voltage Operation. Internal 1.6A Peak Current Switch. Internal ±1.8% Reference. Low Quiescent Current at 1.6mA. Frequency Operation from 100Hz to 100KHz. Current Limiting. ! APPLICATIONS " " Saver for Cellular phones DC-DC Converter Module ! TYPICAL APPLICATION CIRCUIT 200µH L CO 220µF D1 1N5819 8 VOUT + DRI IPK VCC FB SC SE TC GND 1 2 3 4 *RS VIN + C1 100µF 7 6 5 8.6V SAVER *:Io=0.3/RS 470pF RB RA 5.6K 33K CT MC34063A Saver Circuit for Cellular Phone ! ORDERING INFORMATION MC34063A XX PACKAGE TYPE N: PLASTIC DIP S: SMALL OUTLINE TEMPERATURE C: 0°C~+70°C ORDER NUMBER MC34063ACN (PLASTIC DIP) MC34063ACS (PLASTIC SO) PIN CONFIGURATION TOP VIEW SC 1 SE 2 TC 3 GND 4 8 DRI 7...