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OCH29891

ORIENT-CHIP
Part Number OCH29891
Manufacturer ORIENT-CHIP
Description 500mA Single Phase DC Fan Driver
Published Apr 3, 2019
Detailed Description OCH29891 500mA Single Phase DC Fan Driver ◼ General Description The OCH29891 is an integrated Hall sensor with H-Bridge...
Datasheet PDF File OCH29891 PDF File

OCH29891
OCH29891

Overview
OCH29891 500mA Single Phase DC Fan Driver ◼ General Description The OCH29891 is an integrated Hall sensor with H-Bridged output driver designed for brushless DC motor applications.
The device is using HV process includes an one-chip Hall sensor for magnetic sensing, an amplifier that amplifies the Hall voltage, a comparator to provide switching hysteresis for noise rejection, a bi-directional drivers for sinking and driving large current load.
Placing the device in a variable magnetic field, if the magnetic flux density is larger than threshold BOP, the DO is turned to sink and DOB is turned to drive.
This output state is held until the magnetic flux density reverses and falls below BRP, then causes DO to be turned to drive and DOB turned to sink.
OCH29891 is available in SIP-4L package and is rated over the -40°C to 125°C.
◼ Features ⚫ One-chip Solution (Hall Element + Driver) ⚫ Continuous Output Current : 500mA ⚫ High Sensitivity Hall Sensor BOP25GS、BRP-25GS ⚫ Lock-...


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