Description

Designed for use in battery-powered applications, the FAN5308 is a high-efficiency, low-noise synchronous PWM current mode and pulse skip (power-save) mode DC-DC converter. It can provide up to 800mA of output current over an input range from 2.5V to 5.5V. The output voltage can be externally adjusted over a range of 0.8V to 5.5V by means of an external voltage divider.

Features

■ 96 efficiency, synchronous operation

■ Adjustable output voltage options from 0.8V to VIN

■ 2.5V to 5.5V input voltage range

■ Up to 800mA output current

■ Fixed-frequency 1.3MHz PWM operation

■ High-efficiency, power-save mode

■ 100 duty cycle low-dropout operation

■ Soft-start

■ Output over-voltage protection

■ Dynamic output voltage positioning

■ 25µA quiescent current

■ Thermal shutdown and short-circuit protection

■ Pb-free 3x3mm 6-lead MLP package

Applications

■ Pocket PCs, PDAs

■ Cell phones

■ Battery-powered portable devices

■ Digital cameras

■ Hard disk drives

■ Set-top boxes

■ Point-of-load power

■ Notebook computers

■ Communications equipment