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AH3774-SA-7

Description
Board Mount Hall Effect / Magnetic Sensors HV Hall-Effect Latch 32Vdd -32Vddr 60mA
CategoryThe sensor   
File Size469KB,14 Pages
ManufacturerDiodes
Websitehttp://www.diodes.com/
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AH3774-SA-7 Overview

Board Mount Hall Effect / Magnetic Sensors HV Hall-Effect Latch 32Vdd -32Vddr 60mA

AH3774-SA-7 Parametric

Parameter NameAttribute value
Product AttributeAttribute Value
ManufacturerDiodes
Product CategoryBoard Mount Hall Effect / Magnetic Sensors
RoHSDetails
TypeHall Effect Latch
Operating Supply Current3 mA
Maximum Output Current60 mA
Operating Point Min/Max20 G to 60 G
Release Point Min/Max (Brp)- 60 G to - 20 G
Maximum Operating Temperature+ 125 C
Mounting StyleSMD/SMT
Operating Supply Voltage28 V
Package / CaseSOT-23-3
PackagingCut Tape
PackagingMouseReel
PackagingReel
Output TypeOpen Drain
Output Voltage200 mV
ProductHall Effect Latches
Termination StyleSMD/SMT
Minimum Operating Temperature- 40 C
Pd - Power Dissipation230 mW
Factory Pack Quantity3000
Supply Voltage - Max28 V
Supply Voltage - Min3 V
AH3774
HIGH-VOLTAGE HIGH-SENSITIVITY HALL EFFECT LATCH
Description
The AH3774 is a high-voltage, high-sensitivity Hall Effect Latch IC
designed for commutation of brushless DC motor, flow meters, linear
encoders and position sensors in industrial and consumer home
appliance 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 AH3774 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 over current 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).
The magnetic operating and release polarity is opposite for SOT23
and SC59 packages. SOT23 and SIP-3 packages will require South
Pole to the part marking side to operate while SC59 will require South
Pole to the non-part marking side.
Pin Assignments
(Top View)
3 OUTPUT
GND 2
1 V
DD
SC59 and SOT23
(Top View)
3. OUTPUT
2. GND
1. V
DD
SIP-3
Features
Bipolar Latch (South Pole: On, North Pole: Off)
3.0V
to 28V Operating
Voltage Range
High Sensitivity: Bop and Brp of +40G and -40G Typical
Single Open Drain Output with Over Current 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)
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
Equipments 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.
AH3774
Document number: DS37899 Rev. 1 - 2
1 of 14
www.diodes.com
September 2015
© Diodes Incorporated

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