Single-chip can drive two-coil brushless direct current (BLDC) fans / motors

Diodes'AH2985 includes a Hall-effect sensor, dynamic offset correction, and two complementary open-drain output drivers with internal Zener diode protection. Available now from Digi-Key stock it is optimized for low start-up voltage. To help protect the motor coils, AH2985 provides rotor lock protection, which shuts down output drives if rotor lock is detected. The device automatically restarts when the rotor lock is removed. Over-temperature shutdown provides thermal protection for the device. The AH2985 is available in industry-standard TO94 package.