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A1442 - Low Voltage Full Bridge Brushless DC Motor Driver

General Description

The A1442 is a full-bridge motor driver designed to drive lowvoltage, brushless DC motors.

Commutation of the motor is achieved by use of a single Hall element to detect the rotational position of an alternating-pole ring magnet.

Key Features

  • Low voltage operation.
  • Reverse voltage protection on VDD and S¯¯L¯¯E¯¯E¯¯P pins.
  • Output short circuit and thermal shutdown protections.
  • Soft switching algorithm to reduce audible switching noise and EMI interference.
  • Unidirectional working mode provides motor rotation in one direction.
  • Hall chopper stabilization technique for precise signal response over operating range.
  • Sleep mode pin allowing external logic signal enable/ disable to reduce average power cons.

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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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A1442 Low Voltage Full Bridge Brushless DC Motor Driver with Hall Commutation and Soft Switching, and Reverse Battery, Short Circuit, and Thermal Shutdown Protection Features and Benefits ▪ Low voltage operation ▪ Reverse voltage protection on VDD and S¯¯L¯¯E¯¯E¯¯P pins ▪ Output short circuit and thermal shutdown protections ▪ Soft switching algorithm to reduce audible switching noise and EMI interference ▪ Unidirectional working mode provides motor rotation in one direction ▪ Hall chopper stabilization technique for precise signal response over operating range ▪ Sleep mode pin allowing external logic signal enable/ disable to reduce average power consumption ▪ Antistall feature guarantees continuous rotation ▪ Low current consumption sleep mode ▪ Single-chip solution for high reliability