器件名称: AAT1152IKS-2.5-T1
功能描述: 850kHz 1A Buck DC/DC Converter
文件大小: 658.63KB 共17页
简 介:850kHz 1A Buck DC/DC Converter General Description
The AAT1152 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 is internally compensated for simplified system design and low external parts count. The AAT1152 features a Power-OK (POK) function which monitors the output, alerting the system if the output voltage falls out of regulation. The AAT1152 is available in a Pb-free MSOP-8 package and is rated over the -40°C to +85°C temperature range.
AAT1152
Features
SwitchReg
5.5V Max Supply Input Fixed or Adjustable VOUT 1.0V to 4.2V 1A Output Current Integrated Low On Resistance Power Switches Up to 95% Efficiency Power-OK Signal Internally Compensated Current Mode Control High Initial Accuracy: ±1% 850kHz Switching Frequency Constant Pulse Width Modulation (PWM) Mode Low Output Ripple with Light Load 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
100k
10μF
VP
AAT1152
POK
FB 4.1μH LX
ENABLE 100Ω VCC SGND 0.1μF PGND 3 x 22μF OUTPUT
1152.2006.09.1.7
1
850kHz 1A Buck DC/DC Converter Pin Descriptions
Pin #
1 2 3 4 5 6 7 8
AAT1152
Symbol
FB SGND EN VCC VP LX POK P……
