AAT1149B - 2.2MHz Fast Transient 400mA Step-Down Converter

AAT

General Description

The AAT1149B 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.

Key Features

Ultra-Small 0603 Inductor (Height = 1mm).
VIN Range: 2.2V to 5.5V.
VOUT Fixed 1.8V.
400mA Max Output Current.
Up to 98% Efficiency.
45μA No Load Quiescent Current.

📥 Download Datasheet

AAT1149B 2.2mhz fast transient 400ma step-down converter by AAT - Datasheet Preview

Datasheet Details

Part number	AAT1149B
Manufacturer	AAT
File Size	914.11 KB
Description	2.2MHz Fast Transient 400mA Step-Down Converter
Datasheet	AAT1149B Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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SwitchRegTM PRODUCT DATASHEET AAT1149B 2.2MHz Fast Transient 400mA Step-Down Converter General Description The AAT1149B 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 AAT1149B can deliver 400mA of load current while maintaining a low 45μA no load quiescent current. The 2.2MHz switching frequency minimizes the size of external components while keeping switching losses low. The AAT1149B maintains high efficiency throughout the operating range, which is critical for portable applications.