Date: 31/12/2020

Automotive grade two-wire hall switches for proximity and position sensing

Diodes launched high-sensitivity and high-stability featured automotive-compliant, two-wire unipolar (AH323xQ/4xQ) and latch (AH327xQ/8xQ) switch integrated circuits. The Ics are for use in automotive proximity- and position-sensing applications, including seatbelt buckle, power window, gear selector and seat position.

To ensure higher reliability of devices, The AH324xQ and AH328xQ feature integrated self-diagnostics checks on main device blocks, supply voltage, and temperature. The third output state warns of any abnormal condition. ISO 26262 ASIL-B ready devices adopts an advanced chopper stabilized design providing higher stability of the magnetic operating and release points (BOP/BRP) over the 2.7V to 27V operating voltage and -40°C to +150°C temperature range. This stability, coupled with a high ESD rating of 8kV, built-in reverse blocking diode, and supply pin Zener clamp, enables the AH32xxQ series to meet the demanding requirements of automotive proximity/position-sensing applications, as per Diodes.

All AH32xxQ devices are supplied in the SC59 package. They are qualified to AEC-Q100, manufactured in IATF 16949 certified facilities, and support PPAP documentation. The AH324xQ and AH328xQ have a unit price starting at $0.40 in 3000 piece quantities, while the AH323xQ and AH327xQ start at $0.36 in 3000 piece quantities.