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