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AH9481

BCD
Part Number AH9481
Manufacturer BCD
Description Single Phase Low Noise Smart Motor Driver
Published Aug 2, 2015
Detailed Description Data Sheet Single Phase Low Noise Smart Motor Driver AH9479/80/81 General Description The AH9479/80/81 is a single ch...
Datasheet PDF File AH9481 PDF File

AH9481
AH9481

Overview
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.
4 second to detect whether there is rotation condition, if fails, the IC will shut off motor driver for four seconds again.
This sequence will be repeated until rotation condition is detected, and the IC enters normal...


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