Data Sheet

BIPOLAR HALL-EFFECT POSITION SENSORS

AH41

Nov 2010

Rev. 1. 2

BCD Semiconductor Manufacturing Limited

1

General Description

The AH41 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 amplifiers the Hall voltage, and a

Schmitt to provide switching hysteresis for noise

rejection and open-collector output. An internal

bandgap regulator is used to provide temperature

compensated supply voltage for internal circuits and

allows a wide operating supply range.

A north pole of sufficient strength will turn the output

ON. In the absence of a magnetic field, the output is

OFF.

This IC is available in TO-92S-3 package.

Features

•

On-chip Hall Sensor

•

Wide Operating Voltage Range: 4V to 24V

•

Internal Bandgap Regulator for Temperature

Compensation

•

Maximum Output Sink Current: 50mA

•

Low Profile TO-92S-3

•

Operating Temperature: -40˚C to 150˚C

•

ESD Rating: 2000V (Human Body Model)

300V (Machine Model)

Application

•

Brushless DC Motor

Figure 1. Package Type of AH41

TO-92S-3