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General Description

The AAT1150 SwitchReg? is a member of AnalogicTechs Total Power Management IC? (TPMIC?) product family. The step-down switching converter is ideal for applications where high efficiency, small size, and low ripple are critical. Able to deliver 1A with internal power MOSFETs, the current-mode controlled IC provides high efficiency using synchronous rectification. Fully internally compensated, the AAT1150 simplifies system design and lowers external parts count.

The AAT1150 is available in an MSOP-8 package and is rated over the -40°C to +85°C temperature range.

Features

? VIN Range: 2.7V to 5.5V

? Up to 95 Efficiency

? 110m? RDS(ON) MOSFET Switch

? <1.0?A of Shutdown Current

? 1MHz Switching Frequency

? Fixed or Adjustable VOUT: 1.0V to 4.2V

? High Initial Accuracy: ±1

? 1.0A Peak Current

? Integrated Power Switches

? Synchronous Rectification

? Internally Compensated Current Mode Control

? Constant PWM Mode for Low Output Ripple

? Internal Soft Start

? Current Limit Protection

? Over-Temperature Protection

? MSOP-8 package

? -40°C to +85°C Temperature Range

Applications

? Cable/DSL Modems

? Computer Peripherals

? High Efficiency Conversion From 5V or 3.3V Supply

? Network Cards

? Set-Top Boxes