AH3373
HIGH VOLTAGE HIGH SENSITIVITY
HALL EFFECT UNIPOLAR SWITCH
Description
Pin Assignments
The AH3373 is a high voltage high sensitivity Hall Effect Unipolar
switch IC designed for proximity, position and level sensing in
(TOP View)
industrial and consumer home appliances and personal care
applications. To support wide range of demanding applications, the
3 OUTPUT
NEW PRODUCT
design has been optimized to operate over the supply range of 3.0V
GND 2
to 28V. With chopper stabilized architecture and an internal bandgap
1 VDD
regulator to provide temperature compensated supply for internal
circuits, the AH3372 provides a reliable solution over the whole
SC59 and SOT23
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. When the magnetic flux density (B) perpendicular
(TOP View)
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
3. OUTPUT
lower than the release point (BRP). The output remains switched off
2. GND
for North pole fields to or no magnetic fields.
1. VDD
SIP-3 (Bulk Pack)
The magnetic operating and release polarity is opposite for SOT23
and SC59 packages. SOT23 and SIP-3 (Ammo Pack), SIP-3 (Bulk
Pack) packages require south pole to the part marking side to operate
while SC59 requires south pole to the non-part marking side.
Applications
Features
•
Unipolar Operation
•
High Sensitivity: BOP and BRP of +55G and +35G Typical
•
Single Open Drain Output with Over Current Limit
•
3.0V to 28V Operating Voltage Range
•
Chopper Stabilized Design Provides
o
Superior Temperature Stability
o
Minimal Switch Point Drift
o
Enhanced Immunity to Stress
•
Building Automation, Office Equipments and Industrial Applications
•
Good RF Noise Immunity
•
Reverse Blocking Diode
•
Zener Clamp on Supply and Output Pins
•
-40C to +125C Operating Temperature
•
ESD: HBM > 6kV
•
Industry Standard SC59, 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)
Notes:
Position and Proximity Sensing in Consumer Home Appliances,
•
Open and Close Detect
•
Position Detect
•
Level Detect
•
Flow Meters
•
Contact-less Switches
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
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