General Description

The FAN5307, a high efficiency low noise synchronous PWM current mode and Pulse Skip (Power Save) mode DC-DC converter is designed for battery-powered applications. It provides up to 300mA of output current over a wide input range from 2.5V to 5.5V. The output voltage can be either internally fixed or externally adjustable over a wide range of 0.7V to 5.5V VIN by an external voltage divider. Custom output voltages are also available. Contact a Fairchild sales representative for customized output voltage options.

Features

■ 95 Efficiency, Synchronous Operation

■ Adjustable Output Voltage Option from 0.7V to VIN

■ 2.5V to 5.5V Input Voltage Range

■ Customized Fixed Output Voltage Options

■ Up to 300mA Output Current

■ Fixed Frequency 1MHz PWM Operation

■ High Efficiency Power Save Mode

■ 100 Duty Cycle Low Dropout Operation

■ Soft Start

■ Dynamic Output Voltage Positioning

■ 15µA Quiescent Current

■ Excellent Load Transient Response

■ 5-Lead SOT-23 Package

■ 6-Lead MLP 3x3mm Package

Applications

■ Pocket PCs, PDAs

■ Cell Phones

■ Battery-Powered Portable Devices

■ Digital Cameras

■ Low Power DSP Supplies