AH3368Q HIGH VOLTGAE LOW SENSITIVITY AUTOMOTIVE HALL EFFECT UNIPOLAR SWITCH Description Pin Assignments The AH3368Q 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 AH3368Q 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 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) 3. OUTPUT Features 2. GND Unipolar Operation 1. V DD Low Sensitivity: B and B of 150G and 125G Typical OP RP Single Open Drain Output with Over Current Limit SIP-3 (Bulk Pack) 3.0V to 28V Operating Voltage RP0ange Chopper Stabilized Design Provides o Superior Temperature Stability o Minimal Switch Point Drift o Enhanced Immunity to Stress Good RF Noise Immunity Applications Reverse Blocking Diode Zener Clamp on Supply and Output Pins Position and Proximity Sensing in Automotive Applications -40C to +150C Operating Temperature Seat Position ESD: HBM > 8kV, CDM: > 2kV Seatbelt Buckle AECQ100 Grade 0 Qualified Steering Lock/Immobilisation Industry Standard SOT23 and SIP-3 (Ammo Pack), SIP-3 (Bulk Gear Stick Pack) Packages HVAC Compression Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Transmission Actuator Halogen and Antimony Free. Green Device (Note 3) Transmission Gear Position 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 AH3368Q Typical Applications Circuit (Note 4) 3.0V to 28V V DD R L OUTPUT AH3368Q C IN GND Note: 4. CIN is for power stabilization and to strengthen the noise immunity, the recommended capacitance is 10nF ~ 100nF. R is the pull-up resistor. L Pin Descriptions Package: 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 14 AH3368Q November 2016 Diodes Incorporated www.diodes.com Document number: DS39180 Rev. 1 - 2 NEW PRODUCT