General Description

The AAT1120 SwitchReg is a 1.5MHz step-down converter with an input voltage range of 2.7V to 5.5V and output as low as 0.6V. Its low supply current, small size, and high switching frequency make the AAT1120 the ideal choice for portable applications.

Features

• VIN Range: 2.7V to 5.5V

• VOUT Range: 0.6V to VIN

• Up to 500mA Output Current

• Up to 96 Efficiency

• 30μA Typical Quiescent Current

• 1.5MHz Switching Frequency

• Soft-Start Control

• Over-Temperature and Current Limit Protection

• 100 Duty Cycle Low-Dropout Operation

• <1μA Shutdown Current

• Small External Components

• Ultra-Small STDFN22-8 Package

• Temperature Range: -40°C to +85°C

Applications

• Bluetooth® Headsets

• Cellular Phones

• Digital Cameras

• Handheld Instruments

• Micro Hard Disk Drive

• Portable Music Players

• USB Devices