器件名称: AAT1150IKS-1.0-T1
功能描述: 1MHz 1A Step-Down DC/DC Converter
文件大小: 662.4KB 共17页
简 介:1MHz 1A Step-Down DC/DC Converter General Description
The AAT1150 SwitchReg is a step-down switching converter 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 a Pb-free MSOP-8 package and is rated over the -40°C to +85°C temperature range.
AAT1150
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 3x 22μF
1150.2006.09.1.5
1
1MHz 1A Step-Down DC/DC Converter Pin Descriptions
Pin #
1 2 3 4 5 6, 7
AAT1150
Symbol
FB SGND EN VCC VP LX
Function
Feedback input pin. This pin must be connected to the con……
