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A4937 Datasheet Automotive 3-phase MOSFET Driver

Manufacturer: Allegro MicroSystems

Overview: A4937 Automotive 3-Phase MOSFET Driver.

General Description

The A4937 is a 3-phase controller for use with N-channel external power MOSFETs and is specifically designed for automotive applications.

A unique charge pump regulator provides full (>10 V) gate drive for battery voltages down to 7 V and allows the A4937 to operate with a reduced gate drive, down to 5.5 V.

A bootstrap capacitor is used to provide the above battery supply voltage required for N-channel MOSFETs.

Key Features

  • High current 3-phase gate drive for N-channel MOSFETs.
  • SPI compatible serial control.
  • Cross-conduction protection.
  • Programmable dead time.
  • 5.5 to 50 V supply voltage range.
  • TTL inputs compatible with 3.3 V and 5 V logic.
  • Extensive diagnostics output.
  • Low current sleep mode.

A4937 Distributor