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AP3003

BCD Semiconductor
Part Number AP3003
Manufacturer BCD Semiconductor
Description BUCK DC-DC CONVERTER
Published May 3, 2007
Detailed Description Data Sheet 150kHz 3A BUCK DC-DC CONVERTER General Description Features AP3003 The AP3003 series of regulators are f...
Datasheet PDF File AP3003 PDF File

AP3003
AP3003

Overview
Data Sheet 150kHz 3A BUCK DC-DC CONVERTER General Description Features AP3003 The AP3003 series of regulators are fixed frequency PWM buck (step-down) DC/DC converter, capable of driving a 3A load with excellent line and load regulation.
These regulators include internal frequency compensation and a fixed frequency oscillator so that they are easy to use.
A system adopting AP3003 requires a minimum number of external components to work.
A standard series of inductors, optimized for use with the AP3003 series, are available from several manufacturers.
This feature greatly simplifies the design of switch-mode power supplies.
These ICs are available in TO-220-5 and TO-263-5 packages.
· 3.
3V, 5V, 12V Fixed (±4% Tolerance) and Adjustable (±3% Tolerance) Output Versions · Guaranteed 3A Output Load Current · 150kHz Fixed Frequency Internal Oscillator · Input Voltage Range up to 32V · Requires only 4 external components · High Efficiency up to 90% · Excellent Line and Load Regulation · TTL Shutdown Capability · Low Power Standby Mode, IQ Typically 80µA · Built-in Current Limit Protection and Thermal Shutdown Circuit Applications · LCD Monitor and LCD TV · On-Card DC-DC Converter · DVD Recorder · PDP TO-220-5 TO-263-5 Aug.
2008 Rev.
1.
2 Figure 1.
Package Types of AP3003 BCD Semiconductor Manufacturing Limited 1 150kHz 3A BUCK DC-DC CONVERTER Pin Configuration Data Sheet AP3003 T Package (TO-220-5) Metal Tab GND 5 4 3 2 1 S Package (TO-263-5) ON/OFF FEEDBACK GND OUTPUT VIN Metal Tab GND 5 4 3 2 1 ON/OFF FEEDBACK GND OUTPUT VIN Figure 2.
Pin Configuration of AP3003 (Top View) Pin Description Pin Number 1 2 3 4 5 Pin Name Function VIN Unregulated input voltage OUTPUT Switch driver output GND Ground FEEDBACK Feedback Pin.
For fixed version, connect it to system output.
For adjustable version, connect it with an external resistor and capacitor feedback network to program the system output voltage ON/OFF The TTL logic compatible input to control the ...


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