Magnetic proximity sensor DIODES AH3372-SA-7 Hall Effect switch IC designed for operation in harsh industrial environments
Product Overview
The AH3372 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. Optimized for a wide supply range of 3.0V to 28V, it features a chopper-stabilized architecture and an internal bandgap regulator for temperature compensation, ensuring reliable operation. The device includes reverse blocking diode and Zener clamp on the supply, along with an over-current limit and Zener clamp on the output for robustness. The single open-drain output switches on with a South pole of sufficient strength, remaining on until the magnetic flux density drops below the release point. The magnetic polarity for operation differs between SOT23/SIP-3 and SC59 packages.
Product Attributes
- Brand: Diodes Incorporated
- Origin: Not specified
- Material: Not specified
- Color: Not specified
- Certifications: Totally Lead-Free & Fully RoHS Compliant, Halogen and Antimony Free (Green Device)
Technical Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
| Absolute Maximum Ratings | |||||
| Supply Voltage (VDD) | (Note 6) | 32 | V | ||
| Reverse Supply Voltage (VDDR) | (Note 6) | -32 | V | ||
| Output Off Voltage (VOUT_MAX) | (Note 6) | 32 | V | ||
| Continuous Output Current (IOUT) | 60 | mA | |||
| Reverse Output Current (IOUT_R) | -50 | mA | |||
| Package Power Dissipation (PD) | SIP-3 (Ammo/Bulk Pack) | 550 | mW | ||
| Package Power Dissipation (PD) | SC59 and SOT23 | 230 | mW | ||
| Storage Temperature Range (Ts) | -65 | +165 | C | ||
| Maximum Junction Temperature (TJ) | +150 | C | |||
| ESD HBM | > 6 | kV | |||
| Recommended Operating Conditions | |||||
| Supply Voltage (VDD) | Operating | 3.0 | 28 | V | |
| Operating Temperature Range (TA) | Operating | -40 | +125 | C | |
| Electrical Characteristics | |||||
| Output ON Voltage (VOUT_ON) | IOUT = 20mA, B > BOP | -0.2 | 0.4 | V | |
| Output Leakage Current (ILKG) | VOUT = 28V, B < BRP, Output off | - | <0.1 | 10 | A |
| Supply Current (IDD) | Output open, TA = +25C | - | 3 | 3.5 | mA |
| Supply Current (IDD) | Output open, TA = -40C to +125C | - | - | 4 | mA |
| Reverse Battery Current (IDD_R) | VDD = -18V, TA = -40C to +125C | - | -0.01 | 1 | mA |
| Reverse Battery Current (IDD_R) | VDD = -28V, TA = -40C to +125C | - | -0.01 | 1.5 | mA |
| Device Power-On Time (tP_ON) | VDD >= 3V, B > BOP (Note 7) | - | 10 | - | s |
| Chopping Frequency (fC) | - | 800 | - | kHz | |
| Response Time Delay (tD) | (Note 9) | - | 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, (Note 10) | 30 | - | 55 | mA |
| Zener Clamp Voltage (VZ) | IDD = 5mA | 28 | - | - | V |
| Magnetic Characteristics | |||||
| Operation Point (BOPS) | VDD = 12V, TA = +25C | - | 30 | - | Gauss |
| Operation Point (BOPS) | TA = -40C to +125C | 15 | 30 | 45 | Gauss |
| Release Point (BRPS) | VDD = 12V, TA = +25C | - | 20 | - | Gauss |
| Release Point (BRPS) | TA = -40C to +125C | 5 | 20 | 35 | Gauss |
| Hysteresis (BHY) | VDD = 12V, TA = +25C | - | 10 | - | Gauss |
| Hysteresis (BHY) | TA = -40C to +125C | 5 | 10 | 17 | Gauss |
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