AAT1150

AAT1150 1MHz 1A Step-Down DC/DC Converter General Description The AAT1150 SwitchReg™ is a member of AnalogicTech's 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 SwitchReg™ VIN Range: 2.7V to 5.5V Up to 95% Efficiency 110mΩ RDS(ON) MOSFET Switch <1.0µA 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 Typical Application INPUT 10µF VP FB AAT1150 LX ENABLE 100Ω VCC 4.1µH OUTPUT SGND 0.1µF PGND 2x 22µF 1150.2005.03.1.2 1 AAT1150 1MHz 1A Step-Down DC/DC Converter Pin Descriptions Pin # 1 2 3 4 5 6, ...