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AH3776-P-B Datasheet(PDF) 1 Page - Diodes Incorporated

Part # AH3776-P-B
Description  HIGH-VOLTAGE, HIGH-SENSITIVITY HALL EFFECT LATCH
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Manufacturer  DIODES [Diodes Incorporated]
Direct Link  http://www.diodes.com
Logo DIODES - Diodes Incorporated

AH3776-P-B Datasheet(HTML) 1 Page - Diodes Incorporated

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AH3776
Document number: DS38230 Rev. 1 - 2
1 of 13
www.diodes.com
September 2015
© Diodes Incorporated
AH3776
HIGH-VOLTAGE, HIGH-SENSITIVITY HALL EFFECT LATCH
Description
The AH3776 is a high-voltage, medium-sensitivity Hall Effect latch IC
designed for commutation of brushless DC motors, flow meters,
linear encoders and position sensors in industrial and consumer
home appliances and personal care applications. To support a wide
range of demanding applications, the design is optimized to operate
over the supply range of 3.0V to 28V. With chopper stabilized
architecture
and
an
internal
bandgap
regulator
to
provide
temperature compensated supply for internal circuits, the AH3776
provides a reliable solution over the whole operating range. For
robustness and protection, the device has a reverse blocking diode
with a Zener clamp on the supply. The output has an overcurrent limit
and a Zener clamp.
The single, open-drain output can be switched on with South pole of
sufficient strength and switched off with North pole of sufficient
strength. When the magnetic flux density (B) perpendicular to the
package is larger than the operate point (BOP) the output is switched
on (pulled low). The output is held latched until magnetic flux density
reverses and becomes lower than the release point (BRP).
Features
Bipolar Latch (South Pole: On, North Pole: off)
3.0V to 28V Operating Voltage Range
High Sensitivity: BOP and BRP of +110G and -110G Typical
Single, Open-Drain Output with Overcurrent Limit
Chopper Stabilized Design Provides
-
Superior Temperature Stability
-
Minimal Switch Point Drift
-
Enhanced Immunity to Stress
Good RF Noise Immunity
Reverse Blocking Diode and Zener Clamp on Supply
-40
C to +125°C Operating Temperature
ESD (HBM): 6kV
Industry Standard SC59, SOT23 and SIP-3 Packages
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Pin Assignments
(Top View)
1 VDD
GND 2
3 OUTPUT
SOT23
(Top View)
1. VDD
2. GND
3. OUTPUT
SIP-3
Applications
Brushless DC Motor Commutation
Revolution Per Minute (RPM) Measurement
Flow Meters
Angular and Linear Encoder and Position Sensors
Contact-less Commutation, Speed Measurement and Angular
Position Sensing/Indexing in Consumer Home Appliances, Office
Equipment and Industrial Applications
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-
free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.


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