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MIC2251 - High-Efficiency Low EMI Boost Regulator

General Description

The MIC2251 is a general purpose DC/DC boost switching regulator that

Key Features

  • low noise, EMI reduction circuitry, and high efficiency across a wide output current range. The MIC2251 is optimized for noise-sensitive hand held battery powered.

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Datasheet Details

Part number MIC2251
Manufacturer MICREL
File Size 872.66 KB
Description High-Efficiency Low EMI Boost Regulator
Datasheet download datasheet MIC2251 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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MIC2251 High-Efficiency Low EMI Boost Regulator General Description The MIC2251 is a general purpose DC/DC boost switching regulator that features low noise, EMI reduction circuitry, and high efficiency across a wide output current range. The MIC2251 is optimized for noise-sensitive hand held battery powered applications. A proprietary control method allows low ripple across the output voltage and current ranges. The MIC2251 incorporates a pseudo-random dithering function to reduce EMI levels up to 10dB enabled by the DITH pin. The MIC2251 is designed for use with inductor values from 4.7µH to 22µH, and is stable with ceramic capacitors from 1µF to 22µF. The MIC2251 attains a high peak efficiency up to 90% at 100mA and excellent light load efficiency of 80% at 1mA.