General Description

The AAT1106 is a 1.5MHz constant frequency current mode PWM step-down SwitchReg™ converter with a unique adaptive slope compensation scheme allowing the device to operate with a lower range of inductor values to optimize size and provide efficient operation. It is ideal for portable equipment powered by single-cell Lithium-ion batteries and is optimized for high efficiency, achieving levels up to 96.

Features

• VIN Range: 2.5V to 5.5V

• VOUT: Adjustable 0.6V to VIN

• Up to 600mA Output Current

• Up to 96 Efficiency

• 1.5MHz Switching Frequency

• 100 Duty Cycle Dropout Operation

• Adaptive Slope Compensated Current Mode Control for Excellent Line and Load Transient Response

• <1μA Shutdown Current

• Short-Circuit and Thermal Fault Protection

• TSOT23-5 Package

• -40°C to +85°C Temperature Range

Applications

• Cellular Phones, Smartphones

• Digital Still Cameras

• Digital Video Cameras

• Microprocessor and DSP Core Supplies

• MP3 and Portable Media Players

• PDAs

• Wireless and DSL Modems