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AZ34063

Shanghai SIM-BCD Semiconductor
Part Number AZ34063
Manufacturer Shanghai SIM-BCD Semiconductor
Description 0.8A Step-Down / Step-Up / Inverting DC-DC Converter
Published Nov 16, 2005
Detailed Description Data Sheet 0.8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER General Description The AZ34063 is a monolithic switching re...
Datasheet PDF File AZ34063 PDF File

AZ34063
AZ34063


Overview
Data Sheet 0.
8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER General Description The AZ34063 is a monolithic switching regulator control circuit containing the primary functions required for DC-DC converters.
This device consists of internal temperature compensated reference, voltage comparator, controlled duty cycle oscillator with active current limit circuit, driver and high current output switch.
This device is specifically designed to be used in Step-Down, Step-Up and Voltage-Inverting applications with a minimum number of external components.
The AZ34063 is available in 2 packages: SOIC-8 and DIP-8.
AZ34063 Features • • • • • • • Operation from 3.
0V to 36V Input Low Standby Current Current Limiting Output Switch Current to 0.
8A Output Voltage Adjustable Operation Frequency up to 65KHz (CT=330pF) Precision 2% Reference Applications · · · · Battery Chargers NICs/ Switches/ Hubs ADSL Modems Negative Voltage Power Supplies SOIC-8 DIP-8 Figure 1.
Package Types of AZ34063 Apr.
2005 Rev.
2.
1 BCD Semiconductor Manufacturing Limited 1 Data Sheet 0.
8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Pin Configuration P/M Package (DIP-8/SOIC-8) Switch Collector Switch Emitter Timing Capacitor GND 1 2 3 4 8 7 6 5 Driver Collector IPK Sense VCC Comparator Inverting Input AZ34063 Top View Figure 2.
Pin Configuration of AZ34063 Functional Block Diagram Driver Collector 8 B A S R Q 1 Switch Collector IPK Sense 7 Ipk IPK OSC 2 Switch Emitter CT VCC 6 3 Timing Capacitor + - 1.
25V Reference Regulator Comparator Inverting Input 5 4 GND Figure 3.
Functional Block Diagram of AZ34063 Apr.
2005 Rev.
2.
1 BCD Semiconductor Manufacturing Limited 2 Data Sheet 0.
8A STEP-DOWN/STEP-UP/INVERTING DC-DC CONVERTER Pin Description Pin Number 1 2 3 4 5 6 7 8 Pin Name Switch Collector Switch Emitter Timing Capacitor GND Comparator Inverting Input VCC IPK Sense Driver Collector Function Internal switch transistor collector Internal switch transistor emitter Timing C...


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