Diodes ah3772 sa 7 hall effect latch ic featuring stable switching and overcurrent limit protection
Product Overview
The AH3772 is a high-voltage, high-sensitivity Hall Effect latch IC designed for commutation of brushless DC motors, flow meters, linear encoders, and position sensors in industrial and consumer home appliances and personal care applications. It operates over a 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 robustness with a reverse-blocking diode and zener clamp on the supply, and an overcurrent limit and 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.
Product Attributes
- Brand: Diodes Incorporated
- Certifications: Totally Lead-Free & Fully RoHS Compliant, Halogen and Antimony Free ("Green" Device)
Technical Specifications
| Parameter | Value | Unit | Conditions |
| Operating Voltage Range | 3.0 to 28 | V | |
| High Sensitivity (Typical) | BOP: +25, BRP: -25 | Gauss | TA = +25C, VDD = 12V |
| Output Type | Single, Open-Drain | ||
| Output Current Limit (Typical) | 30 to 55 | mA | B>BOP |
| Chopping Frequency (Typical) | 800 | kHz | VDD >= 3V |
| Start-Up Time (Typical) | 10 | s | VDD >= 3V, B > BOP |
| Operating Temperature Range | -40 to +125 | C | |
| ESD Withstand Capability (HBM) | 6 | kV | |
| Package Options | SC59, SOT23, SIP-3 | ||
| Reverse-Supply Voltage | -32 | V | |
| Continuous-Output Current | 60 | mA | |
| Storage Temperature Range | -65 to +165 | C | |
| Maximum Junction Temperature | +150 | C | |
| Output-On Voltage (Typical) | 0.2 | V | IOUT = 20mA, B > BOP |
| Output-Leakage Current (Max) | 10 | A | VOUT = 28V, B < BRP, Output off |
| Supply Current (Typical) | 3 | mA | Output open, TA = +25C |
| Supply Current (Max) | 4 | mA | Output open, TA = -40C to +125C |
| Reverse-Battery Current (Max) | 1.5 | mA | VDD = -28V, TA = -40C to +125C |
| Hysteresis (Typical) | 50 | Gauss | TA = +25C |
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