Diodes ah3363q p b unipolar hall effect switch ic for seat and seatbelt buckle detection in vehicles
Product Overview
The AH3363Q is an AECQ100 qualified high voltage, high sensitivity Hall Effect Unipolar switch IC designed for position and proximity sensing in automotive applications. It operates over a wide supply range of 3.0V to 28V and features a chopper-stabilized architecture for superior temperature stability and minimal switch point drift. The device offers robust protection with a reverse blocking diode and Zener clamps on supply and output pins, along with an over-current limit on the output. The single open-drain output switches on with a sufficiently strong South pole magnetic field and remains on until the field strength drops below the release point. It is designed for applications such as seat and seatbelt buckle detection, steering lock/immobilisation, gear position sensing, and HVAC compression.
Product Attributes
- Brand: Diodes Incorporated
- Certifications: AECQ100 Grade 0 Qualified
- Material: Totally Lead-Free & Fully RoHS Compliant, Halogen and Antimony Free (Green Device)
- Packages: SC59, SOT23, SIP-3 (Ammo Pack), SIP-3 (Bulk Pack)
Technical Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
| Electrical Characteristics | |||||
| Supply Voltage (VDD) | Operating | 3.0 | - | 28 | V |
| Operating Temperature Range | Operating | -40 | - | +150 | C |
| Output ON Voltage (VOUT_ON) | IOUT = 20mA, B > Bop | - | - | 0.4 | V |
| Output Leakage Current (ILKG) | VOUT = 28V, B | - | 10 | A | |
| Supply Current (IDD) | Output open, TA = +25C | - | 3 | 3.5 | mA |
| Supply Current (IDD) | Output open, TA = -40C to +150C | - | - | 4 | mA |
| Device Power-On Time (tP_ON) | VDD >= 3V, B > Bop | - | 10 | - | s |
| Response Time Delay (tD) | Time from magnetic threshold reached to the start of the output rise or fall | - | 3.75 | - | s |
| Output Rising Time (tR) | RL = 1k, CL = 20pF | - | 0.2 | 1 | s |
| Output Falling Time (tF) | RL = 1k, CL = 20pF | - | 0.1 | 1 | s |
| Output Current Limit (IOCL) | B > Bop | 30 | - | 55 | mA |
| Zener Clamp Voltage (VZ) | IDD = 5mA | 28 | - | - | V |
| Magnetic Characteristics | |||||
| Operation Point (BOPS) | VDD = 12V, TA = +25C | - | 55 | - | Gauss |
| Operation Point (BOPS) | TA = -40C to +150C | 38 | 55 | 72 | Gauss |
| Release Point (BRPS) | VDD = 12V, TA = +25C | - | 35 | - | Gauss |
| Release Point (BRPS) | TA = -40C to +150C | 20 | 35 | 50 | Gauss |
| Hysteresis (BHY) | VDD = 12V, TA = +25C | - | 20 | - | Gauss |
| Hysteresis (BHY) | TA = -40C to +150C | 12 | 20 | 28 | Gauss |
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