AH3365Q
Q
HIGH VOLTGAE MEDIUM SENSITIVITY
AUTOMOTIVE HALL EFFECT UNIPOLAR SWITCH
Description Pin Assignments
The AH3365Q is an AECQ100 qualified high voltage medium
sensitivity Hall Effect Unipolar switch IC designed for position and
proximity sensing in automotive applications such as in seat and
(Top View)
seatbelt buckle, steering lock/immobilisation, gear stick, transmission
actuator and gear position, HVAC compression, wiper, door/trunk
closure, etc. To support wide range of demanding applications, the
3 OUTPUT
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
regulator to provide temperature compensated supply for internal
1 V
DD
circuits, the AH3365Q 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
SOT23
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
to the package is larger than the operate point (B ) the output is
OP
switched on (pulled low) and is held on until magnetic flux density B
is lower than the release point (BRP). The output remains switched off
for North pole fields to or no magnetic fields. (Top View)
.
3.
OUTPUT
Features
2. GND
Unipolar Operation
1. V
DD
Medium Sensitivity: B and B of 100G and 80G Typical
OP RP
Single Open Drain Output with Over Current Limit
SIP-3 (Bulk Pack)
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
Good RF Noise Immunity
Applications
Reverse Blocking Diode
Zener Clamp on Supply and Output Pins
Position and Proximity Sensing in Automotive Applications
-40C to +150C Operating Temperature Seat Position
ESD: HBM > 8kV, CDM: >2kV Seatbelt Buckle
AECQ100 Grade 0 Qualified
Steering Lock/Immobilisation
Industry Standard SOT23 and SIP-3 (Ammo Pack), SIP-3 (Bulk
Gear Stick
Pack) Packages
HVAC Compression
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Transmission Actuator
Transmission Gear Position
Halogen and Antimony Free. Green Device (Note 3)
Wipers
Sunroof and Windows
Door/Trunk Closure
Door Locks
Contact-Less Switches
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See Low-Pass Filter
Sample and
Hold
Dynamic Offset
Cancellation
AH3365Q
Q
Typical Applications Circuit (Note 4)
3.0V to 28V
V
DD
R
L
OUTPUT
AH3365Q
C
IN
GND
Note: 4. C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF ~ 100nF.
IN
R is the pull-up resistor.
L
Pin Descriptions
Package: SOT23 and SIP-3 (Ammo Pack), SIP-3 (Bulk Pack)
Pin Number Pin Name Function
1 V Power Supply Input
DD
2 GND Ground
3 OUTPUT Output Pin
Functional Block Diagram
V
DD
Power
switch
To All Subcircuits
OUTPUT
Amp Amp
Control
Current
Limit
GND
2 of 14
AH3365Q November 2016
Diodes Incorporated
www.diodes.com
Document number: DS39177 Rev. 1 - 2
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