AZ34063CMTR-G1 Diodes Incorporated

Data Sheet 1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C General Description Features The AZ34063C is a monolithic switching regulator Operation from 3.0V to 36V Input control circuit which contains the primary functions Low Standby Current required for DC-DC converters. This device consists Current Limiting of internal temperature compensated reference, voltage Output Switch Current to1A comparator, controlled duty cycle oscillator with active Output Voltage Adjustable current limit circuit, driver and high current output Operation Frequency up to 180kHz (C =100pF) T switch. Precision 2% Reference The AZ34063C is specifically designed as a general DC-DC converter to be used in Step-Down, Step-Up Applications and Voltage-Inverting applications with a minimum number of external components. Battery Chargers ADSL Modems Hubs The AZ34063C is available in 2 packages: SOIC-8 and Negative Voltage Power Supplies DIP-8. SOIC-8 DIP-8 Figure 1. Package Types of AZ34063C Jan. 2013 Rev. 1. 7 BCD Semiconductor Manufacturing Limited 1 Data Sheet 1A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER AZ34063C Pin Configuration M Package P Package (DIP-8) (SOIC-8) Switch Driver 1 8 Switch Driver Collector Collector 1 8 Collector Collector Switch Switch I Sense 2 7 PK I Sense 7 Emitter 2 PK Emitter Timing Timing V V CC CC 3 6 3 6 Capacitor Capacitor Comparator Comparator GND 5 4 GND 4 5 Inverting Input Inverting Input Figure 2. Pin Configuration of AZ34063C (Top View) Functional Block Diagram 8 1 Driver Switch Collector Collector B S Q A R Switch 7 2 I Sense PK Emitter Ipk I PK C T OSC 6 3 Timing V CC Capacitor 1.25V + Refer ence Regul ator - Comparator 54 GND Inverting Input Figure 3. Functional Block Diagram of AZ34063C Jan. 2013 Rev. 1. 7 BCD Semiconductor Manufacturing Limited 2