AH3522Q

Description

The AH352XQ is an AEC-Q100-qualified high-voltage, high-sensitivity Hall-effect omnipolar switch IC designed for position and proximity sensing in automotive applications, such as in seat and seatbelt buckle, steering lock/immobilization, gear stick, transmission actuator and gear position, HVAC compression, wiper, door/trunk closure, and so on. To support a wide range of the demanding applications, the design is 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 AH352XQ 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 overcurrent limit and a Zener clamp.

The single open-drain output can be switched on with south or north pole of sufficient strength. When the magnetic flux density (B) perpendicular to the package is larger than the operate point (B_OP), the output is switched on (pulled low) and stays on until the magnetic flux density B is lower than the release point (B_RP).

Feature(s)

• Omnipolar Operation
• High Sensitivity: B_OP and B_RP of ±20G to ±40G and ±10G to ±25G Typical
• Single Open-Drain Output with Overcurrent Limit
• Resistant to Physical Stress
• 0V to 28V Operating Voltage Range
• 40V Load Dump Protection
• 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 +150°C Operating Temperature
• High ESD HBM: 8kV, CDM: 1kV
• AEC-Q100 Grade 0 Qualified
• Industry Standard SOT23 (Type S), SIP-3 (Ammo Pack) and SIP-3 (Bulk Pack) Packages
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
• TheAH352XQ is suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF16949 certified facilities. https://www.diodes.com/quality/product-definitions/

Application(s)

• Position and proximity sensing in automotive applications
• Open and close detection
• Position detection
• Level detection
• Flow meters
• Contactless switches
• Seatbelt buckles
• Seat positions