General Description

The AP3005 is a 420kHz fixed frequency PWM buck (step-down) DC-DC converter, capable of driving a 2A load with high efficiency, low ripple and excellent line and load regulation. The device includes a voltage reference, an oscillation circuit, an error amplifier, an internal PMOS and etc.

Features

• 2A Constant Output Current

• 130mΩ RDSON Internal Power MOSFET Switch

• Up to 94 Efficiency

• Fixed 420kHz Frequency

• Wide 4.75V to 25V Input Voltage Range

• Output Voltage Adjustable from 0.8V to 21V

• Built in Thermal Shutdown Function

• Built-in Current Limit Function

• Built-in Soft-Start Function

• Support Ceramic or Electrolytic Capacitors

Applications

• Portable DVD

• LCD Monitor/LCD TV

• Digital Photo Frame

• ADSL

• Set-up Box