Diodes Incorporated
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SOT23

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AH3323A

High-Voltage Hall-Effect Unipolar Switch with Internal Pull-Up Resistor

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Description

The AH3323A is a high-voltage ultra 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 AH3323A 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 internally pulled-up 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 the magnetic flux density B is lower than the release point (BRP).

The SOT23 (Type S) and SIP-3 (Bulk Pack) packages will require south pole to the part marking side to operate.

Feature(s)

  • Unipolar Operation
  • High Sensitivity: BOP and BRP of +55G and +35G Typical
  • Internal Pullup Resistor on the 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 SOT23 (Type S) 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 industrial applications
  • Open and close detection
  • Position detection
  • Level detection
  • Flow meters
  • Contactless switches

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Standard
AEC Qualified No
Type Unipolar
Outputs Single
Output Type Pull-up Resistor
Active Output State (B > Bop) Low
Inactive Output State (B < Brp) High
Key Feature Resistant to Physical Stress
Operating Voltage (V) 3 to 28
Average Supply Current (mA) 3
Min Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) 40
Typ Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) 55
Max Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) 70
Min Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) 20
Typ Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) 35
Max Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) 50
Output Current Capability (mA) 30
Operating Ambient Temperature (°C) -40 to 125

Related Content

Packages

Technical Documents

Recommended Soldering Techniques

TN1.pdf