STMicroelectronics MC34063A
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. BLOCK DIAGRAM DIP-8 SO-8 March 2004 1/16 MC34063A/EABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit VCC VIR VSWC VSWE VCE VDC IDC ISW PTOT TJ TSTG TOP Power Supply Voltage Comparator Input Voltage Range Switch Collector Voltage Switch Emitter Voltage (VSWC = 40V) Switch Collector to Emitter Voltage Driver Collector Voltage Driver Collector Current Switch Current Power Dissipation at TA = 25°C Operating Junction Temperature for DIP-8 for SO-8 Storage Temperature Range Operating Ambient Temperature Range for AC and EC SERIES for AB SERIES for EB SERIES 50 -0.3 to 40 40 40 40 40 100 1.5 1.25 0.625 150 -40 to 150 0 to 70 -40 to 85 -40 to 125 V V V V V V mA A W °C °C °CABSOLUTE MAXIMUM RATINGS
are those values beyond which damage to the device may occur.