AH3326

Description

The AH332X is a high-voltage high-sensitivity Hall-effect Unipolar switch IC designed for proximity, position and level sensing in industrial and consumer home appliances and personal care applications. To support a wide range of the 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 AH332X 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 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 is held on until the magnetic flux density B is lower than the release point (B_RP).

The magnetic operating and release polarity is opposite for SOT23 (Type S) and SC59 packages. The SOT23 (Type S), SIP-3 (Ammo Pack) and 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.

Feature(s)

• Unipolar Operation
• High Sensitivity: B_OP and B_RP of 30G to115G and 20G to 90G Typical
• Single Open-Drain Output with Overcurrent Limit
• 0V to 28V Operating Voltage Range
• Resistant to Physical Stress
• 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
• High ESD HBM: 8kV
• Industry Standard SC59, 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)
• For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Application(s)

• Position and proximity sensing in consumer home appliances, building automation, office equipment and industrial applications
• Open and close detection
• Position detection
• Level detection
• Flow meters
• Contactless switches