Features

Built-in Hall sensor and amplifier with low temperature coefficients

All-in-one integrated solution significantly reduces external components

Highly stable solution and works with cheaper, lower strength magnets

Integrated complementary open-drain output driver

Supports two-phase motor driver up to 500 mA average load current

No external power switches required, reducing the component count, PCB area, and overall system cost

Lock detection and automatic self-start without external capacitor

Helps to protect coil from overheating or burn-out during rotor lockout

Automatic restart when the rotor lock is released

Reverse voltage diode on input and Zener clamp protection on output

Help protection coil and output device; safe, reliable, and robust operation

Operating temperature range -40¡ãC to 105¡ãC

Suitable for thermally demanding enclosed cooling fan applications

Applications

Two-coil BLDC cooling fans

Power supply cooling fans

PC and notebook cooling fans

Low-voltage/low-power BLDC motors

AH2985 Two Phase Hall Effect Smart Fan Motor Controller

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