Diodes Incorporated AH372x High-Voltage Hall-Effect Latch

Diodes Incorporated AH372x High-Voltage Hall-Effect Latch is designed for precise speed measurement in brushless DC motor commutation and is used in automotive applications. The Diodes Incorporated AH372x operates in a supply range of 3.0V to 28V and features a chopper-stabilized architecture. The device has an internal bandgap regulator for temperature-compensated supply, and robust protection mechanisms, including a reverse blocking diode with a Zener clamp on the supply. The output has an overcurrent limit and a Zener clamp for added reliability.

Features

Bipolar latch (south pole: on, north pole: off)
3.0V to 28V operating voltage range
BOP and BRP of 25G to 140G and -25G to -140G (typ) high sensitivity
Single open-drain output with overcurrent limit
Chopper stabilized design provides superior temperature stability, minimal switch point drift, and enhanced immunity to stress

Good RF noise immunity
Reverse blocking diode and zener clamp on supply
-40°C to +125°C operating temperature
8kV high ESD HBM
Industry-standard SC59, SOT23 (type S), SIP-3 (ammo pack), and SIP-3 (bulk pack) packages
Totally lead-free and fully RoHS compliant
Halogen and antimony-free, green device

Applications

Brushless DC motor commutation
Revolution per minute (RPM) measurement
Flow meters
Angular and linear encoders and position sensors

Contactless commutation, speed measurement, and angular position sensing/indexing in consumer home appliances, office equipment, and industrial applications

Diodes Incorporated AH372x High-Voltage Hall-Effect Latch

Features

Applications

Typical Applications Circuit

Block Diagram

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