器件名称: AAT1143_06
功能描述: 1MHz 400mA Step-Down Converter
文件大小: 772.21KB 共20页
简 介:1MHz 400mA Step-Down Converter General Description
The AAT1143 SwitchReg is a 1MHz step-down converter with an input voltage range of 2.7V to 5.5V and output as low as 0.6V. Its low supply current, small size, and high switching frequency make the AAT1143 the ideal choice for portable applications. The AAT1143 is available in either a fixed version with internal feedback or a programmable version with external feedback resistors. It can deliver 400mA of load current while maintaining a low 25μA no load quiescent current. The 1MHz switching frequency minimizes the size of external components while keeping switching losses low. The AAT1143 feedback and control delivers excellent load regulation and transient response with a small output inductor and capacitor. The AAT1143 is designed to maintain high efficiency throughout the operating range, which is critical for portable applications. The AAT1143 is available in a space-saving 2.0x2.1mm SC70JW-8 package and is rated over the -40°C to +85°C temperature range.
AAT1143
Features
SwitchReg
VIN Range: 2.7V to 5.5V VOUT Adjustable Down to 0.6V — Fixed or Adjustable Version 25μA No Load Quiescent Current Up to 95% Efficiency 400mA Max Output Current 1MHz Switching Frequency Soft Start Over-Temperature Protection Current Limit Protection 100% Duty Cycle Low-Dropout Operation 0.1μA Shutdown Current SC70JW-8 Package Temperature Range: -40°C to +85°C
Applications
Cellular Phones Digital Cameras Handheld Instrument……
