AH3367Q HIGH VOLTGAE ULTRA LOW SENSITIVITY AUTOMOTIVE HALL EFFECT UNIPOLAR SWITCH Description Pin Assignments The AH3367Q 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 (Top View) 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 3 OUTPUT been optimized to operate over the supply range of 3.0V to 28V. With GND 2 chopper stabilized architecture and an internal bandgap regulator to provide temperature compensated supply for internal circuits, the 1 V DD AH3367Q 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 SC59 and SOT23 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 (B ) the output is OP 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. (Top View) The magnetic operating and release polarity is opposite for SOT23 3. OUTPUT and SC59 packages. The SOT23 and SIP-3 (Ammo Pack), SIP-3 2. GND (Bulk Pack) packages require south pole to the part marking side to operate while SC59 requires south pole to the non-part marking side. 1. V DD SIP-3 (Bulk Pack) Features Unipolar Operation Low Sensitivity: B and B of 115G and 90G Typical OP RP 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 Applications Reverse Blocking Diode Position and Proximity Sensing in Automotive Applications Zener Clamp on Supply and Output Pins Seat Position -40C to +150C Operating Temperature Seatbelt Buckle ESD: HBM > 8kV, CDM: > 2kV Steering Lock/Immobilisation AECQ100 Grade 0 Qualified Gear Stick Industry Standard SC59, SOT23 and SIP-3 (Ammo Pack), SIP-3 HVAC Compression (Bulk Pack) Packages Transmission Actuator Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Transmission Gear Position Halogen and Antimony Free. Green Device (Note 3) Wipers Sunroof and Windows Door/Trunk Closure Door Locks Contact-Less Switches Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See Low-Pass Filter Sample and Hold Dynamic Offset Cancellation AH3367Q Typical Applications Circuit (Note 4) 3.0V to 28V V DD R L OUTPUT AH3367Q C IN GND Note: 4. C is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF ~ 100nF. IN R is the pull-up resistor. L Pin Descriptions Packages: SC59, SOT23 and SIP-3 (Ammo Pack), SIP-3 (Bulk Pack) Pin Number Pin Name Function 1 V Power Supply Input DD 2 GND Ground 3 OUTPUT Output Pin Functional Block Diagram V DD Power switch To All Subcircuits OUTPUT Amp Amp Control Current Limit GND 2 of 15 AH3367Q November 2016 Diodes Incorporated www.diodes.com Document number: DS39179 Rev. 1 - 2 NEW PRODUCT