Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. SC59
Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. SIP-3 (Ammo)
Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. SIP-3 (Bulk)
NRND = Not Recommended for New Design
Two-Wire Automotive Hall Effect Unipolar Switches
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The AH3231Q-AH3234Q/AH3270Q-AH3272Q are high voltage, high sensitivity, two-wire Hall Effect Unipolar/Latch switch ICs with 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.
To support a wide range of demanding applications, the design is 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.
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.
For the AH3231Q, AH3232Q, AH3233Q, and AH3234Q two-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.
For the AH3270Q, AH3271Q, and AH3272Q two-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).
Latch: AH3270Q, AH3271Q, AH3272Q
Active Output State (B > Bop) |
6mA |
|---|---|
AEC Qualified |
Yes |
Compliance (Only Automotive Supports PPAP) |
Automotive |
Hall Effect Switch Type |
Unipolar |
Inactive Output State (B < Brp) |
14.5mA |
Max Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) |
70 |
Max Operating Point Bop (Guass) |
70 |
Max ReleasePoint ±Brp(Guass) |
53 |
Max Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) |
53 |
Max Release Point Brp (Guass) |
53 |
Min Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) |
20 |
Min Operating Point Bop (Guass) |
20 |
Min Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) |
3 |
Min Release Point Brp (Guass) |
3 |
Operating Ambient Temperature (°C) |
-40 to 150 |
Operating Voltage (V) |
2.7 to 27 |
Operating Voltage (V) |
2.7 to 27 |
Operating Voltage(V) |
2.7 to 27 |
Output Polarity / Active Pole |
Inverted |
Output Type |
two-wire, current, Active High |
Outputs |
Single |
AEC Qualified |
Yes |
Self-Diagnostics |
No |
Supply Current Off State (mA) |
6 |
Supply Current On State (mA) |
14.5 |
Temperature Coefficient (ppm/°C) |
-1100 |
Typ Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) |
45 |
Typ Operating Point Bop (Guass) |
45 |
Typ Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) |
28 |
Typ Release Point Brp (Guass) |
28 |
Type |
Unipolar |
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A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.
| PCN # | Issue Date | Implementation Date | Subject |
|---|---|---|---|
| PCN-2770 | 2025-10-30 | 2025-10-30 | Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products |
