AAT1147数据手册Skyworks中文资料规格书

描述 Description

The AAT1147 SwitchReg is a fixed frequency 1.4MHz step-down converter with an input voltage range of 2.7V to 5.5V and output voltage as low as 0.6V.
The AAT1147 is optimized for low noise portable applications, reacts quickly to a load variations, and reaches peak efficiency at heavy load.
The AAT1147 output voltage is programmable with external feedback resistors. It can deliver 400mA of load current while maintaining high power efficiency. The 1.4MHz switching frequency minimizes the size of external components while keeping switching losses low.
The AAT1147 available in a Pb-free, space-saving 2.0x2.1mm SC70JW-8 package and is rated over the -40°C to +85°C temperature range.

特性 Features

·VIN Range: 2.7V to 5.5V
·Fixed or Adjustable from 0.6V to VIN
·400mA Max Output Current
·Up to 98% Efficiency
·Low Noise, 1.4MHz Fixed Frequency PWM Operation
·Fast Load Transient
·150µs Soft Start
·Over-Temperature, Current Limit Protection
·100% Duty Cycle Low-Dropout Operation
·0.1µA Shutdown Current
·SC70JW-8 Package
·-40°C to +85°C Temperature Range