[Champion]

GENERAL DESCRIPTION
The CM3708A is a low-noise, pulse-width-modulated (PWM), DC-DC step-down converter. It powers logic and transmitters in small wireless systems such as cellular phones, communicating PDAs, and handy-terminals. The device features an internal synchronous rectifier for high efficiency; it requires no external Schottky diode. Excellent noise characteristics and fixed-frequency operation provide easy post-filtering. The CM3708A is ideally suited for Li-lon battery applications. It is also useful for +3V or +5V fixed input applications.

FEATURES
♦ Patent Filed #6,452,366
♦ 600KHz switching and synchronization
♦ Dynamic output-voltage adjustment from VREF to VIN
♦ 3A Guaranteed Output Current
♦ 95% Efficiency
♦ No Schottky Diode Required
♦ 16-pin PSOP/PTSSOP power packages
♦ 6A Low Noise Current Limit Protection
♦ External Soft Start
♦ Rail to Rail output Buck Converter

APPLICATIONS
♦ Cellular Phone
♦ Cordless Phone
♦ PDAs and Handy-Terminals
♦ AGP Chipset Supplies
♦ CPU I/O Supplies
♦ Notebook Chipset Supplies
♦ Battery Operated Devices