STMicroelectronics MC34063
The MC34063A/E series is a monolithic control circuit delivering the main functions for DC-DC voltage converting. The device contains an internal temperature compensated reference, comparator, duty cycle controlled oscillator with an active current limit circuit, driver and high current output switch.DESCRIPTION
Output voltage is adjustable through two external resistors with a 2% reference accuracy. Employing a minimum number of external components the MC34063A/E devices series is designed for Step-Down, Step-Up and Voltage-Inverting applications. SO-8 BLOCK DIAGRAM March 2001 1/15 MC34063A/EABSOLUTE MAXIMUM RATINGS
Symbol V CC V ir V SWC V SWE V CE Vdc I dc I SW P tot T op Power Supply Voltage Comparator Input Voltage Range Switch Collector Voltage Switch Emitter Voltage (VSWC = 40V) Switch Collector toEmitter Voltage Driver Collector Voltage Driver Collector Current Switch Current Power Dissipation at Tamb = 25 oC (for Plastic Package) (for SOIC Package) Operating Ambient Temperature Range (for AC and EC SERIES) (for AB SERIES) (for EB SERIES) Storage Temperature Range Parameter Value 50 -0.3 to 40 40 40 40 40 100 1.5 1.25 0.625 0 to 70 - 40 to 85 - 40 to 125 - 40 to 150 Unit V V V V V V mA A W o o C C o C o T st g C Absolute Maximum Rating are those values beyond which damage to the device may occur.