DESCRIPTION

The A7222B is a fully integrated, high-efficiency 2A synchronous rectified step-down converter. The A7222B operates at high efficiency over a wide output current load range.

This device offers two operation modes, PWM control and PFM Mode switching control, which allows a high efficiency over the wider range of the load.

The A7222B is available in SOT-26 package.

FEATURES

? High Efficiency: Up to 96

? 1MHz Frequency Operation

? 2A Output Current

? No Schottky Diode Required

? 4.2V to 18V Input Voltage Range

? 0.8V Reference

? Slope Compensated Current Mode Control for

Excellent Line and Load Transient Response

? Integrated internal compensation

? Stable with L ow ESR Ceramic Output Capacitors

? Over Current Protection with Hiccup Mode

? Thermal Shutdown

? Inrush Current Limit and Soft Start

? 40°C to +85°C Temperature Range

? Available in SOT-26 p ackage

APPLICATION

? Distributed Power Systems

? Digital Set Top Boxes

? Flat Panel Television and Monitors

? Wireless and DSL Modems

? Notebook Computer