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AH478

Part Number	AH478
Manufacturer	BCD Semiconductor
Description	SINGLE PHASE HALL EFFECT LATCH
Published	Jul 29, 2011
Detailed Description	Data Sheet SINGLE PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION General Description The AH478 is a single coil Hall sen...
Datasheet	AH478 PDF File

Overview

Data Sheet SINGLE PHASE HALL EFFECT LATCH WITH LOCKED PROTECTION General Description The AH478 is a single coil Hall sensor with output drivers designed for brush-less DC motor application.
This IC consists of one H-bridge driver for motor's coil driving and has automatic lock shutdown and restart function relatively.
To avoid coil burning, rotor lock shutdown detection circuit shut down the output driver if the rotor is blocked and then the automatic recovery circuit will try to restart the motor.
This function repeats while rotor is blocked.
Until the blocking is removed, the motor recovers running normally.
If a magnetic flux density is larger than threshold BOP, the DO is turned to sink ...

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