Diodes AH41 - Manual

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