GM34063

www.DataSheet4U.com MICROELECTRONICS Power Management A A GM34063 1.5A DC-TO-DC CONVERTER CONTROL CIRCUIT Description GM34063 has all the functions required for DC-to-DC converters: an internal temperature- compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver, and highcurrent output switch. GM34063 is designed for step-down, step-up and voltage-inverting applications by using a minimum number of external components. Features 3.0V to 40V input Adjustable Output Voltage Current Limiting Output Switch Current to 1.5A Low Standby Current Operating Frequency to 100kHz Precision 2% Reference Application CD-ROM Motherboards SMPS Power Supply Battery Chargers DSL Modem SCHEMATIC DIAGRAM 8 Driver Collector S R 7 Ipk Sense Ipk Oscillator CT 6 VCC 100 Q Q2 Q1 1 Switch Collector 2 Switch Emitter 3 Comparator + 1.25V Reference Regulator Timing Capacitor 5 Comparator Inverting Input (Bottom View) 4 GND www.gammamicro.com GM34063 1 V0.1 Power Management MICROELECTRONICS A A GM34063 1.5A DC-to-DC CONVERTER CONTROL CIRCUIT MARKING INFORMATION & PIN CONFIGURATIONS (TOP VIEW) SOP-8 Ipk Sense Driver Collector VCC Comparator Inventing Input Ipk Sense Driver Collector DIP - 8 VCC Comparator Inventing Input 8 7 6 5 8 7 6 5 GM34063 AYWW 1 Switch Collector Switch Emitter GM34063 AYWW 2 3 4 GND Timing Capacitor Switch Collector Switch Emitter 1 2 3 4 GND Timing Capacitor A : Assembly Location Y : Year ...