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AAT1149

AAT
Part Number AAT1149
Manufacturer AAT
Description Step-Down Converter
Published Apr 30, 2007
Detailed Description 3MHz Fast Transient 400mA Step-Down Converter General Description The AAT1149 SwitchReg is a 3.0MHz step-down converter ...
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AAT1149
AAT1149

Overview
3MHz Fast Transient 400mA Step-Down Converter General Description The AAT1149 SwitchReg is a 3.
0MHz step-down converter with an input voltage range of 2.
7V to 5.
5V and output voltage as low as 1.
0V.
It is optimized to react quickly to load variations and operate with a tiny 0603 inductor that is only 1mm tall.
The AAT1149 output voltage is programmable via external feedback resistors.
It can deliver 400mA of load current while maintaining a low 45μA no load quiescent current.
The 3.
0MHz switching frequency minimizes the size of external components while keeping switching losses low.
The AAT1149 maintains high efficiency throughout the operating range, which is critical for portable applicati...


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