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LM74502 - Low IQ High Side Switch Controller

General Description

The LM74502, LM74502H is a controller which operates in conjunction with an external back-to-back connected N-channel MOSFETs to realize a low loss reverse polarity protection and load disconnect solution.

Key Features

  • 3.2-V to 65-V input range (3.9-V start-up).
  • 65-V input reverse voltage rating.
  • Integrated charge pump to drive.
  • External back-to-back N-Channel MOSFETs.
  • External high side switch MOSFET.
  • External reverse polarity protection MOSFET.
  • Gate drive variants.
  • LM74502: 60-μA peak gate drive source capacity.
  • LM74502H: 11-mA peak gate drive source capacity.
  • 2.3-A peak gate sink current capacity.
  • En.

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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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LM74502, LM74502H SNOSDE5A – DECEMBER 2021 – REVISED MAY 2022 LM74502, LM74502H Low IQ High Side Switch Controller with Reverse Polarity and Overvoltage Protection 1 Features • 3.2-V to 65-V input range (3.9-V start-up) • –65-V input reverse voltage rating • Integrated charge pump to drive – External back-to-back N-Channel MOSFETs – External high side switch MOSFET – External reverse polarity protection MOSFET • Gate drive variants – LM74502: 60-μA peak gate drive source capacity – LM74502H: 11-mA peak gate drive source capacity • 2.