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MP3422 - Synchronous Step-Up Converter

General Description

The MP3422 is a high-efficiency, synchronous, current

mode, step-up converter with output disconnect.

The MP3422 starts up from an input voltage as low as 1.9V, while providing inrush current limiting and output short-circuit protection.

Key Features

  • Up to 98% Efficiency.
  • 1.9V to 5.5V Input Range.
  • 2.5V to 5.5V Output Range.
  • Internal Synchronous Rectifier.
  • 600kHz Fixed Switching Frequency.
  • >6.5A Switch Current Limit Capability.
  • 43uA Quiescent Current.
  • High Efficiency over Full Load Range.
  • Internal Soft-start and Compensation.
  • True Output Load Disconnect from Input.
  • OCP, SCP, OVP and OTP Protection.
  • Small 2x2mm QFN14 Package.

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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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The Future of Analog IC Technology DESCRIPTION The MP3422 is a high-efficiency, synchronous, current–mode, step-up converter with output disconnect. The MP3422 starts up from an input voltage as low as 1.9V, while providing inrush current limiting and output short-circuit protection. The integrated P-channel synchronous rectifier improves efficiency and eliminates the need for an external Schottky diode. This P-channel disconnects the output from the input during shutdown. The 600kHz switching frequency allows small external components, while the internal compensation and soft-start minimize external component count. The MP3422 provides a compact solution for a 5V output, 2.5A load requirement, using a supply voltage down to 2.8V. The MP3422 is available in 14-pin QFN 2mmx2mm package.