FAN5902 Datasheet (Fairchild Semiconductor)

FAN5902, 800mA Buck Converter

The FAN5902 is a high-efficiency, low-noise, synchronous, step-down DC-to-DC converter designed for powering the radio frequency power amplifiers (RFPA) in 3G mobile handsets and other mobile applications.

It provides up to 800mA of output current over an input voltage range of 2.7V to 5.5V.

The out

FAN5902 Features

* 92% Efficient Synchronous Operation 2.7V to 5.5V Input Voltage Range VOUT Range from 0.4V to 3.4V (or VIN) Up to 800mA Output Current 20µs Step Response 30µs Bypass Transition Time 50mΩ Integrated Bypass FET with Controlle