AH374中文资料SINGLE PHASE HALL EFFECT LATCH数据手册Diodes规格书

描述 Description

AH374 is an integrated Hall-Effect latched sensor designed for electronic commutation of brushless DC motor applications. The device includes an on-chip Hall voltage generator for magnetic sensing, a comparator that amplifies the Hall voltage, and a Schmitt trigger to provide switching hysteresis for noise rejection, and open drain output. An internal band-gap regulator provides a temperature compensated supply voltage for internal circuits and allows a wide operating supply range.When the magnetic flux density (B) is larger than operate point (Bop), output is switched on (OUT pin is pulled low). The output state is held on until a magnetic flux density reversal falls below Brp. When B is less than Brp, the output is switched off.The AH374 is available in SIP-3L, SC59 and SOT23 packages.

特性 Features

COMS Hall Effect Latch Operation
2.2V to 20V Operating Range
Open drain pre-driver
25mA output Sink Capability
-40°C to +125°C Operating Temperature
Industry Standard SIP-3, SC59 and SOT23 Packages
Totally Lead-Free & Fully RoHS Compliant
Halogen and Antimony Free. “Green” Device

应用 Application

Brushless DC Motor
Brushless DC Fan
Revolution Counting
Speed Measurement

简介

AH374属于传感器变送器的磁性传感器-开关（固态）。由制造生产的AH374磁性传感器 - 开关（固态）该系列产品使用固态技术来检测是否存在超过某个特定幅度和/或标示的磁场，并提供指示是否存在此类磁场的双态输出。它们与磁簧开关以及线性或罗盘型固态器件不同，前者通过使用移动机械部件来提供类似的功能，后者提供指示所施加磁场的强度和/或方向的可变输出。