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The AH3390Q is an AECQ100 qualified high voltage low sensitivity Hall Effect Unipolar switch IC designed for position and proximity sensing in automotive applications such as in seat and seatbelt buckle , steering lock/immobilisation, gear stick , transmission actuator and gear position, HVAC compression, wiper, door/trunk closure, etc. To support wide range of demanding applications, the design has been optimized to operate over the supply range of 3.0V to 28V. With chopper stabilized architecture and an internal bandgap regulator to provide temperature compensated supply for internal circuits, the AH3390Q 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 over current limit and a Zener clamp.
The single open drain output can be switched on with South pole of sufficient strength. When the magnetic flux density (B) perpendicular to the package is larger than the operate point (BOP) the output is switched on (pulled low) and is held on until magnetic flux density B is lower than the release point (BRP). The output remains switched off for North pole fields to or no magnetic fields.
The magnetic operating and release polarity is opposite for SOT23 and SC59 packages. The SOT23 and SIP-3 (Ammo Pack), SIP-3 (Bulk Pack) packages require south pole to the part marking side to operate while SC59 requires south pole to the non-part marking side.
Position and Proximity Sensing in Automotive Applications
Transmission Gear position
Sunroof and Windows
High Sensitivity: Bop and Brp of +210G and +185G Typical
Single Open Drain Output with Over Current Limit
3.0V to 28V Operating Voltage Range
Chopper Stabilized Design Provides
Superior Temperature Stability
Minimal Switch Point Drift
Enhanced Immunity to Stress
Good RF Noise Immunity
Reverse Blocking Diode
Zener Clamp on Supply and Output Pins
-40°C to +125°C Operating Temperature
ESD: HBM > 6kV
Industry Standard SOT23 and SIP-3 Packages
Totally Lead-Free & Fully RoHS Compliant
Halogen and Antimony Free. “Green” Device
Qualified to AECQ10x
Automotive Compliant PPAP
Single Open Drain, Active Low
3 to 28 V
Average Supply Current
Automotive Grade 0 AECQ100
Operating Point Bop (Bops +ve/ Bopn -ve) Gauss (Min)
Operating Point Bop (Bops +ve/ Bopn -ve) Gauss (Typ)
Operating Point Bop (Bops +ve/ Bopn -ve) Gauss (Max)