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150kHz 3A BUCK DC-DC CONVERTER AP3003

Data Sheet

Aug. 2008 Rev. 1. 2 BCD Semiconductor Manufacturing Limited

General Description

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 regula-

tion. These regulators include internal frequency com-

pensation 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 manu-

facturers. This feature greatly simplifies the design of

switch-mode power supplies.

These ICs are available in TO-220-5 and TO-263-5

packages.

Features

· 3.3V, 5V, 12V Fixed (±4% Tolerance) and Adjust-

able (±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, I

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

Figure 1. Package Types of AP3003

TO-220-5

TO-263-5

1 2 3 4 5 6 ... 15 16

Indice de contenidos

Pagina 1 - Applications

150kHz 3A BUCK DC-DC CONVERTER AP3003 Data Sheet1Aug. 2008 Rev. 1. 2 BC

Pagina 2 - Pin Configuration

150kHz 3A BUCK DC-DC CONVERTER AP3003 Data Sheet10Aug. 2008 Rev. 1. 2 B

Pagina 3 - Functional Block Diagram

150kHz 3A BUCK DC-DC CONVERTER AP3003 Data Sheet11Aug. 2008 Rev. 1. 2 B

Pagina 4 - Ordering Information

150kHz 3A BUCK DC-DC CONVERTER AP3003 Data Sheet12Aug. 2008 Rev. 1. 2 B

Pagina 5

150kHz 3A BUCK DC-DC CONVERTER AP3003 Data Sheet13Aug. 2008 Rev. 1. 2 B

Pagina 6

150kHz 3A BUCK DC-DC CONVERTER AP3003 Data Sheet14Aug. 2008 Rev. 1. 2 B

Pagina 7

150kHz 3A BUCK DC-DC CONVERTER AP3003 Data Sheet15Aug. 2008 Rev. 1. 2 B

Pagina 8

IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the

Pagina 9

150kHz 3A BUCK DC-DC CONVERTER AP3003 Data Sheet2Aug. 2008 Rev. 1. 2 BC

Pagina 10

150kHz 3A BUCK DC-DC CONVERTER AP3003 Data Sheet3Aug. 2008 Rev. 1. 2 BC

Pagina 11

150kHz 3A BUCK DC-DC CONVERTER AP3003 Data Sheet4Aug. 2008 Rev. 1. 2 BC

Pagina 12 - Typical Application

150kHz 3A BUCK DC-DC CONVERTER AP3003 Data Sheet5Aug. 2008 Rev. 1. 2 BC

Pagina 13

150kHz 3A BUCK DC-DC CONVERTER AP3003 Data Sheet6Aug. 2008 Rev. 1. 2 BC

Pagina 14 - TO-220-5

150kHz 3A BUCK DC-DC CONVERTER AP3003 Data Sheet7Aug. 2008 Rev. 1. 2 BC

Pagina 15 - TO-263-5 Unit: mm(inch)

150kHz 3A BUCK DC-DC CONVERTER AP3003 Data Sheet8Aug. 2008 Rev. 1. 2 BC

Pagina 16

150kHz 3A BUCK DC-DC CONVERTER AP3003 Data Sheet9Aug. 2008 Rev. 1. 2 BC

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