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AH9481 - Single Phase Low Noise Smart Motor Driver

This page provides the datasheet information for the AH9481, a member of the AH9479 Single Phase Low Noise Smart Motor Driver family.

Description

The AH9479/80/81 is a single chip solution for driving single coil brushless DC motors.

It combines a motor driver with a high sensitivity Hall sensor, which simplifies the PCB design and makes the fabrication of small-size motors possible.

Features

  • Full Bridge Driver.
  • High Sensitivity Integrated Hall Sensor.
  • Soft-switching for Low Noise.
  • Low Supply Voltage: 2.5V.
  • Locked Rotor Protection and Auto-restart.
  • Thermal Protection.
  • Output Over-current Protection.
  • Short Circuit Protection.
  • Tachometer Output Signal (AH9480).
  • Alarm Output Signal (AH9481).

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Datasheet preview – AH9481

Datasheet Details

Part number AH9481
Manufacturer BCD
File Size 360.16 KB
Description Single Phase Low Noise Smart Motor Driver
Datasheet download datasheet AH9481 Datasheet
Additional preview pages of the AH9481 datasheet.

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Other Datasheets by BCD
  • AH9480 - Single Phase Low Noise Smart Motor Driver
  • AH9479 - Single Phase Low Noise Smart Motor Driver
  • AH920 - HIGH SENSITIVITY CMOS HALL-EFFECT LATCH
  • AH921 - HIGH SENSITIVITY CMOS HALL-EFFECT LATCH
  • AH922 - UNIPOLAR HALL-EFFECT SWITCH
  • AH9247 - High Sensitivity Micropower Omnipolar Hall-Effect Switch
  • AH9248 - High Sensitivity Micropower Omnipolar Hall-Effect Switch
  • AH9249 - High Sensitivity Micropower Omnipolar Hall-Effect Switch

Full PDF Text Transcription

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Data Sheet Single Phase Low Noise Smart Motor Driver AH9479/80/81 General Description The AH9479/80/81 is a single chip solution for driving single coil brushless DC motors. It combines a motor driver with a high sensitivity Hall sensor, which simplifies the PCB design and makes the fabrication of small-size motors possible. The AH9480 has an open-drain tachometer output FG that follows the Hall sensor latching output. The AH9481 has an open-drain rotation detection output RD that is active low when the motor is spinning and goes high when blocked. When there is no motion about 0.4 second, the IC will automatically detect the locked rotor conditions, and enter protection mode, shutting off the motor driver for 4 seconds. Then, the IC will turn on the motor driver for 0.
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