AH3369Q
HIGH VOLTAGE LOW SENSITIVITY
AUTOMOTIVE HALL EFFECT UNIPOLAR SWITCH
Description Pin Assignments
The AH3369Q is an AECQ100 qualified high-voltage low-sensitivity
Hall effect unipolar switch IC designed for position and proximity
(Top View)
sensing in automotive applications, such as in seat and seatbelt
buckle, steering lock/immobilization, gear stick, transmission actuator
3 OUTPUT
and gear position, HVAC compression, wiper, door/trunk closure, etc.
GND 2
To support a wide range of demanding applications, the design is
1 V
DD
optimized to operate over the supply range of 3.0V to 28V. With
chopper-stabilized architecture and an internal bandgap regulator to
SOT23
provide temperature compensated supply for internal circuits, the
AH3369Q 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.
(Top View)
The single open-drain output can be switched on with south pole of
3. OUTPUT
sufficient strength. When the magnetic flux density (B) perpendicular
2. GND
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
1. V
DD
lower than the release point (B ). The output remains switched off
RP
SIP-3 (Bulk Pack)
for north pole fields to or no magnetic fields.
Features Applications
Unipolar Operation
Position and Proximity Sensing in Automotive Applications
Low Sensitivity: B and B of 175G and 150G Typical
OP RP Open and Close Detect
Single Open Drain Output with Overcurrent Limit
Position Detect
3.0V to 28V Operating Voltage Range
Level Detect
Chopper Stabilized Design Provides
Flow Meters
o Superior Temperature Stability
Contact-Less Switches
o Minimal Switch Point Drift
o Enhanced Immunity to Stress
Good RF Noise Immunity
Reverse Blocking Diode
Zener Clamp on Supply and Output Pins
-40C to +150C Operating Temperature
ESD: HBM > 8kV, CDM: > 2kV
AECQ100 Grade 0 Qualified
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)
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
AH3369Q
Typical Applications Circuit (Note 4)
3.0V to 28V
V
DD
R
L
OUTPUT
AH3369Q
C
IN
GND
Note: 4. C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF ~ 100nF. R is the pull-up resistor.
IN L
Pin Descriptions
Package: SOT23 and SIP-3 (Ammo Pack), SIP-3 (Bulk Pack)
Pin Number Pin Name Function
1 Power Supply Input
V
DD
2 GND Ground
3 OUTPUT Output Pin
Functional Block Diagram
V
DD
t
e
s
f Power
f
n O
switch
d
o
i n
c
t i
a
a
l
m
l r
e
To All Subcircuits
a l
e e
t
p
c n l
w
i
y
n o
m
F
a L
D a
s
C
S
d s OUTPUT
l
a
o
-
P
H
Amp Amp
Control
Current
Limit
GND
2 of 12
September 2018
AH3369Q
Diodes Incorporated
www.diodes.com
Document number: DS39181 Rev. 2 - 2
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