Diodes ah3774 w 7 hall effect latch ic featuring chopper stabilization and robust output protection
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Product Description
Product Overview
The AH3774 is a high-voltage, high-sensitivity Hall-effect latch IC designed for commutation of brushless DC motors, flow meters, linear encoders, and position sensors. It is optimized for a wide supply voltage range of 3.0V to 28V and features chopper stabilization for superior temperature stability and minimal switch point drift. The device offers robustness with reverse blocking diode and Zener clamp on the supply, along with 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
- Note: The AH3774 is NOT RECOMMENDED FOR NEW DESIGNS. PLEASE USE THE AH3724.
Technical Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
| Supply Voltage (VDD) | Operating | 3.0 | 28 | V | |
| Operating Temperature Range | -40 | +125 | C | ||
| Output On Voltage (VOUT_ON) | IOUT = 20mA, B > Bop | 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 | mA | ||
| Supply Current (IDD) | Output Open, TA = -40C to +125C | 4 | mA | ||
| Device Startup Time (tST) | VDD 3V, B > Bop | 10 | s | ||
| Chopping Frequency (fC) | VDD 3V | 800 | kHz | ||
| Output Current Limit (IOCL) | B > Bop | 30 | 55 | mA | |
| Operation Point (Bop) | VDD = 12V, TA = +25C | 40 | Gauss | ||
| Operation Point (Bop) | TA = -40C to +125C | 20 | 40 | 60 | Gauss |
| Release Point (Brp) | VDD = 12V, TA = +25C | -40 | Gauss | ||
| Release Point (Brp) | TA = -40C to +125C | -60 | -40 | -20 | Gauss |
| Hysteresis (Bhy) | VDD = 12V, TA = +25C | 80 | Gauss | ||
| Hysteresis (Bhy) | TA = -40C to +125C | 40 | 80 | 120 | Gauss |
| ESD (HBM) | 6 | kV |
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