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AH3574 Datasheet

HIGH VOLTAGE HIGH SENSITIVITY HALL EFFECT OMNIPOLAR SWITCH

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Description
The AH3574 is a high voltage high sensitivity Hall Effect Omnipolar
switch IC designed for proximity, position and level sensing in
consumer home appliances, office equipment, smart home to
industrial applications. To support wide range of demanding
applications, the design has been 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 AH3574 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 or 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) and is held on until magnetic
flux density B is lower than the release point (BRP).
AH3574
HIGH VOLTAGE HIGH SENSITIVITY
HALL EFFECT OMNIPOLAR SWITCH
Pin Assignments
(TOP View)
GND 2
3 OUTPUT
1 VDD
SOT23
(TOP View)
SIP-3 (Bulk Pack)
3. OUTPUT
2. GND
1. VDD
Features
Omnipolar Operation
High Sensitivity: BOP and BRP of ±40G and ±25G Typical
Single Open Drain Output with Over Current Limit
3.0V to 28V Operating Voltage Range
Chopper Stabilized Design Provides
Superior Temperature Stability
Minimal Switch Point Drift
Enhanced Immunity to Stress
Good RF Noise Immunity
Reverse Blocking Diode
Zener Clamp on Supply and Output Pins
-40°C to +125°C Operating Temperature
ESD: HBM 6kV
Industry Standard SOT23 and SIP-3 (Ammo Pack), SIP-3 (Bulk
Pack) Packages
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
Position and Proximity Sensing in Consumer Home Appliances,
Building Automation, Office Equipments and Industrial Applications
Open and Close Detect
Position Detect
Level Detect
Flow Meters
Contact-Less Switches
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ 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.
AH3574
Document number: DS40413 Rev. 1 - 2
1 of 13
www.diodes.com
January 2018
© Diodes Incorporated


Diodes Semiconductor Electronic Components Datasheet

AH3574 Datasheet

HIGH VOLTAGE HIGH SENSITIVITY HALL EFFECT OMNIPOLAR SWITCH

No Preview Available !

Typical Applications Circuit
AH3574
3.0V to 28V
VDD
RL
OUTPUT
CIN AH3574
GND
Note:
4. CIN is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF ~ 100nF.
RL is the pull-up resistor.
Pin Descriptions
Package: SOT23 and SIP-3 (Ammo Pack), SIP-3 (Bulk Pack)
Pin Number
1
2
3
Pin Name
VDD
GND
OUTPUT
Function
Power Supply Input
Ground
Output Pin
Functional Block Diagram
VDD
Power
Switch
To All Subcircuits
Amp
Amp
Control
OUTPUT
Current
Limit
GND
AH3574
Document number: DS40413 Rev. 1 - 2
2 of 13
www.diodes.com
January 2018
© Diodes Incorporated


Part Number AH3574
Description HIGH VOLTAGE HIGH SENSITIVITY HALL EFFECT OMNIPOLAR SWITCH
Maker Diodes
Total Page 13 Pages
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