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HM3420B - N-Channel Enhancement Mode Power MOSFET

General Description

The HM3420B is a high-efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture.

The device is available in an adjustable version.

Key Features

  • s.
  • 1.5MHz Constant Frequency Operation.
  • No Schottky Diode Required.
  • Low Dropout Operation:100% Duty Cycle.
  • PFM Mode for High Efficiency in Light Load.
  • Over temperature Protected.
  • Low Quiescent Current: 40μA.
  • Short Circuit Protection.
  • Inrush Current Limit and Soft Start.
  • SOT23 -5 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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 Features  1.5MHz Constant Frequency Operation  No Schottky Diode Required  Low Dropout Operation:100% Duty Cycle  PFM Mode for High Efficiency in Light Load  Over temperature Protected  Low Quiescent Current: 40μA  Short Circuit Protection  Inrush Current Limit and Soft Start  SOT23 -5 package Applications  Cellular and Smart Phones  Wireless and DSL Modems  PDAs  Portable Instruments  Digital Still and Video Cameras  PC Cards +03420B  General Description The HM3420B is a high-efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version. Supply current with no load is 40uA and drops to <1uA in shutdown. The 2.5V to 5.