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AAT1149A

Skyworks
Part Number AAT1149A
Manufacturer Skyworks
Description 2.2MHz Fast Transient 400mA Step-Down Converter
Published Feb 27, 2017
Detailed Description DATA SHEET AAT1149A 2.2MHz Fast Transient 400mA Step-Down Converter General Description The AAT1149A SwitchReg is a 2.2...
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AAT1149A
AAT1149A

Overview
DATA SHEET AAT1149A 2.
2MHz Fast Transient 400mA Step-Down Converter General Description The AAT1149A SwitchReg is a 2.
2MHz step-down converter with an input voltage range of 2.
2V to 5.
5V.
It is optimized to react quickly to load variations and operate with a tiny 0603 inductor that is only 1mm tall.
The AAT1149A can deliver 400mA of load current and operates in PWM only mode for low noise operation.
The 2.
2MHz switching frequency minimizes the size of external components while keeping switching losses low.
The AAT1149A is optimized for low noise portable applications.
The AAT1149A is available in a Pb-free, space-saving 5-pin wafer-level chip scale (WLCSP) package and is rated over the -40°C to +85°C temperature range.
Features • Ultra-Small 0603 Inductor (Height = 1mm) • VIN Range: 2.
2V to 5.
5V • VOUT Fixed 1.
875V • 400mA Max Output Current • Up to 98% Efficiency • 3mA No Load Quiescent Current • 2.
2MHz Switching Frequency • 70μs Soft Start • Fast Load Transient...


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