Product Overview
The AH3777 is a high voltage, low sensitivity Hall effect latch IC designed for commutation of brushless DC motors, flow meters, linear encoders, and position sensors in industrial and consumer home appliance 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-compensated operation. The device includes reverse blocking diode and Zener clamp on the supply, and overcurrent limit and Zener clamp on the output for robustness. The single, open-drain output latches 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
| Characteristic | Value | Unit | Conditions |
| Supply Voltage (VDD) | 3.0 to 28 | V | Operating |
| Operating Temperature Range | -40 to +125 | C | Operating |
| Output On Voltage (VOUT_ON) | - to 0.4 | V | IOUT = 20mA, B > Bop |
| Output Leakage Current (IOUT_OFF) | - to 10 | A | VOUT = 28V, B < Brp, Output off |
| Supply Current (IDD) | - to 4 | mA | Output open, TA = -40C to +125C |
| Device Start-Up Time (tST) | 10 | s | VDD >= 3V, B > Bop |
| Chopping Frequency (fc) | 800 | kHz | VDD = 3V to 28V |
| Output Current Limit (IOCL) | 30 to 55 | mA | B>Bop |
| Zener Clamp Voltage (VZ) | 28 | V | IDD = 5mA |
| Operation Point (Bop) | 110 to 170 | Gauss | TA = -40C to +125C |
| Release Point (Brp) | -170 to -110 | Gauss | TA = -40C to +125C |
| Hysteresis (Bhy) | 220 to 340 | Gauss | TA = -40C to +125C |
2210281000_DIODES-AH3777-SA-7_C842139.pdf
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