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AH9481 - Single Phase Low Noise Smart Motor Driver

Download the AH9481 datasheet PDF. This datasheet also covers the AH9479 variant, as both devices belong to the same single phase low noise smart motor driver family and are provided as variant models within a single manufacturer datasheet.

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.

Key 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).

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (AH9479-BCD.pdf) that lists specifications for multiple related part numbers.

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

📁 Similar Datasheet

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AH910 Hall current sensor Alfa Electronics
AH910W Hall current sensor Alfa Electronics
AH911 Hall current sensor Alfa Electronics

Other Datasheets by BCD

Part Number Description
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

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.

View original datasheet text
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.