AH3241Q, AH3242Q, AH3243Q
AH3280Q, AH3281Q, AH3282Q
TWO-WIRE AUTOMOTIVE HALL EFFECT
UNIPOLAR / LATCH SWITCHES INTEGRATED SELF-DIAGNOSTICS
Description
Pin Assignments
The AH3241Q, AH3242Q, AH3243Q, AH3280Q, AH3281Q, and
AH3282Q are high-voltage, high-sensitivity, two-wire, Hall-effect,
Unipolar/Latch switch ICs with integrated self-diagnostics and
automotive-compliant AEC-Q100 qualification; designed for position
and proximity sensing in automotive applications, such as seat and
seatbelt buckle, transmission actuator, gear position, wiper,
door/trunk closure, etc.
(Top View)
GND
To support a wide range of demanding applications, the AH3241Q,
AH3242Q, AH3243Q, AH3280Q, AH3281Q, and AH3282Q are
optimized to operate over a supply range of 2.7V to 27V. These
features include a chopper-stabilized architecture and an internal
bandgap regulator to provide temperature compensated supply for
internal circuits. For robustness and protection, the device has built-in
reverse blocking diode with a Zener clamp on the supply.
VDD
NC
SC59 (Type A1)
The built-in thermal protection also shuts down the chip if temperature
rises to an abnormal value. This will automatically restart the chip
once the junction temperature drops below the safe value.
(Top View)
For AH3241Q, AH3242Q, and AH3243Q 2-wire unipolar switches:
when the flux density (south pole) exceeds BOP, the supply current
state is turned on (low or high). The output is held until a magnetic
flux density falls below BRP, causing output current to be turned off.
2
NC
1
VDD
3
GND
SIP-3 (Future Product)
For AH3280Q, AH3281Q, and AH3282Q 2-wire latch switches: when
the magnetic flux density is larger than BOP, output current is turned
on (high). The output state is held until a magnetic flux density
reversal falls below BRP, causing output current to be turned off (low).
Features and Performance
Applications
•
•
•
•
•
•
Unipolar: AH3241Q, AH3242Q, AH3243Q
Latch: AH3280Q, AH3281Q, AH3282Q
Output Polarity:
Direct: AH3242Q, AH3243Q
Inverted: AH3241Q
Wide Supply Voltage Operation: 2.7V to 27V
Temperature Coefficient -1100ppm/°C (AH3242Q, AH3243Q)
Chopper Stabilized Design Provides:
Superior Temperature Stability
Minimal Switch Point Drift
Enhanced Immunity to Stress
Battery polarity reverse connection protection
Transient Spike Voltage Protection
Over-Temperature Shut Down and Auto-Restart
UVLO Protection
High ESD Rating: HBM = 8kV, CDM = 1kV
Ready for ISO 26262
Temperature Range: -40°C to +150°C
Totally Lead-Free & Fully RoHS Compliant (Notes 1, 2)
Halogen and Antimony Free. “Green” Device (Note 3)
The AH3241Q, AH3242Q, AH3243Q, AH3280Q, AH3281Q,
and AH3282Q are suitable for automotive applications
requiring specific change control; these parts are AECQ100 qualified, PPAP capable, and manufactured in IATF
16949 certified facilities.
https://www.diodes.com/quality/product-definitions/
Notes:
Position and proximity sensing in automotive applications
Seat positioning
Seatbelt buckles
Wiper positioning
Window lifters
Gear selection positioning
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 TPON(max), VDD slew rate > 1V/μs
-
IOFF
-
-
Output jitter
B≥3*BOPMAX 1000 successive square wave
switching under 1KHz.-
-
±3.3
-
μs
TD
Notes:
7. Typical values are defined at TA = +25°C, VDD = 12V. Maximum and minimum values over the operating temperature range are not tested in production
but guaranteed by design, process control and characterization.
8. VDD is the voltage between the VDD pin and the GND pin.
9. When power is initially turned on, VDD must be operated in the correct voltage range to guarantee proper magnetic field sampling, output supply current
state level is valid after the start up time of 28μs from VDD higher than 2.7V. Guaranteed by design.
10. Time delayed from the magnetic threshold reached to the output rise or fall.
11. t > TPON and BRP
