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BCD Semiconductor - COMPLEMENTARY OUTPUT HALL EFFECT LATCH

Numéro de référence AH276
Description COMPLEMENTARY OUTPUT HALL EFFECT LATCH
Fabricant BCD Semiconductor 
Logo BCD Semiconductor 





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AH276 fiche technique
COMPLEMENTARY OUTPUT HALL EFFECT LATCH
General Description
Features
Data Sheet
AH276
The AH276 is an integrated Hall sensor with output
driver designed for electronic commutation of brush-
less DC motor applications. The device includes an on-
chip Hall sensor for magnetic sensing, an amplifier
that amplifies the Hall voltage, a Schmitt trigger to
provide switching hysteresis for noise rejection, a tem-
perature compensation circuit to compensate the tem-
perature drift of Hall sensitivity and two
complementary open-collector drivers for sinking
large load current. It also includes an internal band-gap
regulator which is used to provide bias voltage for
internal circuits.
· On-Chip Hall Sensor
· 3.5V to 16V Supply Voltage
· 350mA (avg) Output Sink Current
· Reversed Supply Voltage Protection
· Build in Over Temperature Protection Function
· -20oC to 85oC Operating Temperature
· Low Profile TO-94 (SIP-4L) Package
· ESD Rating: 300V (Machine Model)
Applications
Placing the device in a variable magnetic field, if the · Dual-Coil Brushless DC Motor
magnetic flux density is larger than threshold BOP, the
pin DO will be turned low (on) and pin DOB will be
·
·
Dual-Coil Brushless DC Fan
Revolution Counting
turned high (off). This output state is held until the · Speed Measurement
magnetic flux density reverses and falls below BRP,
then causes DO to be turned high (off) and DOB
turned low (on).
AH276 is available in TO-94 (SIP-4L) package.
Nov. 2009 Rev. 1. 4
TO-94
Figure 1. Package Type of AH276
BCD Semiconductor Manufacturing Limited
1

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