General Description

The AAT1147 SwitchReg is a member of Skyworks Total Power Management IC™ (TPMIC™) product family. It is a fixed frequency 1.4MHz step-down converter with an input voltage range of 2.7V to 5.5V and output voltage as low as 0.6V.

Features

• VIN Range: 2.7V to 5.5V

• VOUT Adjustable from 0.6V to VIN

• 400mA Output Current

• Up to 98 Efficiency

• Low Noise, 1.4MHz Fixed Frequency PWM Operation

• Fast Load Transient

• 150μs Soft Start

• Over-Temperature and Current Limit Protection

• 100 Duty Cycle Low Dropout Operation

• <1μA Shutdown Current

• 8-Pin SC70JW Package

• Temperature Range: -40°C to +85°C

Applications

• Cellular Phones

• Digital Cameras

• Handheld Instruments

• Microprocessor/DSP Core /IO Power

• PDAs and Handheld Computers

• USB Devices