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 (Top View) Unipolar/Latch switch ICs with integrated self-diagnostics and automotive-compliant AEC-Q100 qualification designed for position GND 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 AH3241Q, AH3242Q, AH3243Q, AH3280Q, AH3281Q, and AH3282Q are optimized to operate over a supply range of 2.7V to 27V. These VDD NC features include a chopper-stabilized architecture and an internal bandgap regulator to provide temperature compensated supply for SC59 (Type A1) 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 (Top View) rises to an abnormal value. This will automatically restart the chip once the junction temperature drops below the safe value. 3 GND 2 NC For AH3241Q, AH3242Q, and AH3243Q 2-wire unipolar switches: when the flux density (south pole) exceeds B , the supply current 1 VDD OP state is turned on (low or high). The output is held until a magnetic flux density falls below B , causing output current to be turned off. RP SIP-3 (Future Product) For AH3280Q, AH3281Q, and AH3282Q 2-wire latch switches: when the magnetic flux density is larger than B , output current is turned OP on (high). The output state is held until a magnetic flux density reversal falls below B , causing output current to be turned off (low). RP Features and Performance Applications Unipolar: AH3241Q, AH3242Q, AH3243Q Position and Proximity Sensing in Automotive Applications Latch: AH3280Q, AH3281Q, AH3282Q Seat position Output Polarity: Seatbelt buckle Direct: AH3242Q, AH3243Q Wiper position Inverted: AH3241Q Window lifter Wide Supply Voltage Operation: 2.7V to 27V Gear selection position 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: -40C to +150C 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 AEC-Q100 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. AH3241Q, AH3242Q, AH3243Q AH3280Q, AH3281Q, AH3282Q Typical Applications Circuit V+ R L 100 VSENSE V DD C IN AH324xQ 0.01uF GND (1) High-side sensing V+ V DD C IN AH324xQ 0.01uF GND VSENSE R L 100 (2) Low-side sensing Notes: 4. The decoupling capacitor CIN between VDD and GND pins is needed for power stabilization and to strengthen the noise immunity recommended capacitance is 100nF, as close to IC as possible. Pin Descriptions Package: SC59 and SIP-3 (Ammo Pack and Bulk Pack) Pin Number Pin Name Function 1 V Supply voltage input DD 2 NC No connection can be connected to V , GND, or left open. DD 3 GND Ground AH3241Q, AH3242Q, AH3243Q 2 of 19 October 2020 AH3280Q, AH3281Q, AH3282Q www.diodes.com Diodes Incorporated Document number: DS41822 Rev. 1 - 2