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 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.

Features

• 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