DIODES AH3722 SA 7 Hall effect latch with Zener clamp protection and chopper stabilized architecture
AH372X High-Voltage Hall-Effect Latch
The AH372X is a high-voltage, high-sensitivity Hall-effect latch IC designed for brushless DC-motor commutation, speed measurement, angular or linear encoders, and position sensors in automotive applications. It operates over a supply range of 3.0V to 28V and features a chopper-stabilized architecture with an internal bandgap regulator for temperature compensation. The device includes a reverse blocking diode with a Zener clamp on the supply and an overcurrent limit with a Zener clamp on the output. The single, open-drain output switches on with a South pole and off with a North pole of sufficient strength. It offers superior temperature stability, minimal switch point drift, and enhanced immunity to stress and RF noise.
Product Attributes
- Brand: Diodes Incorporated
- Certifications: Totally Lead-Free & Fully RoHS Compliant, Halogen and Antimony Free. Green Device. For automotive applications, AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities are available upon request.
- Origin: Not specified in the document.
- Material: Not specified in the document.
- Color: Not specified in the document.
Technical Specifications
| Part Number | Description | Operating Voltage Range | High Sensitivity (Typ) | Output Type | Operating Temperature | ESD HBM | Package Types |
|---|---|---|---|---|---|---|---|
| AH3722 | High-Voltage Hall-Effect Latch | 3.0V to 28V | BOP: 25G, BRP: -25G | Open-Drain | -40C to +125C | 8kV | SC59, SOT23 (Type S), SIP-3 (Ammo Pack), SIP-3 (Bulk Pack) |
| AH3724 | High-Voltage Hall-Effect Latch | 3.0V to 28V | BOP: 40G, BRP: -40G | Open-Drain | -40C to +125C | 8kV | SC59, SOT23 (Type S), SIP-3 (Ammo Pack), SIP-3 (Bulk Pack) |
| AH3725 | High-Voltage Hall-Effect Latch | 3.0V to 28V | BOP: 70G, BRP: -70G | Open-Drain | -40C to +125C | 8kV | SC59, SOT23 (Type S), SIP-3 (Ammo Pack), SIP-3 (Bulk Pack) |
| AH3727 | High-Voltage Hall-Effect Latch | 3.0V to 28V | BOP: 140G, BRP: -140G | Open-Drain | -40C to +125C | 8kV | SC59, SOT23 (Type S), SIP-3 (Ammo Pack), SIP-3 (Bulk Pack) |
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | Operating | 3.0 | - | 28 | V |
| Output On Voltage (VOUT_ON) | IOUT = 20mA | - | 0.2 | 0.4 | V |
| Output Leakage Current (IOUT_OFF) | VOUT = 28V, B < BRP, output off | - | < 0.1 | 10 | A |
| Supply Current (IDD) | Output open, TA = +25C | - | 3 | 4 | mA |
| Supply Current (IDD) | Output open, TA = -40C to +125C | - | - | 5 | mA |
| Device Startup Time (tST) | VDD 3V, B > BOP | - | 10 | - | s |
| Chopping Frequency (fC) | VDD 3V | - | 500 | - | kHz |
| Output Current Limit (IOCL) | B > BOP | 30 | - | 55 | mA |
| Zener Clamp Voltage (VZ) | IDD = 5mA, TA = +25C | 28 | - | - | V |
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