Description
The US72 and US73 provide a monolithic solution for driving single-coil fans. The bridge drivers provide bi-directional current through the single phase motor winding.

US72: The tachometer/Frequency Generator (FG) version produces a logic signal, which is aligned with the Hall plate signal.
US73: The Rotation Detector (RD) / Alarm Signal version has a low output in the normal condition. When a locked rotor condition occurs the RD changes to a high state.

FEATUREs and Benefits
◾ Full Bridge Driver
◾ High Sensitivity Hall Sensor
◾ Locked Rotor Shutdown and Auto-Restart
◾ Power-Efficient CMOS and Power MOSFETs
◾ Integrated tachometer (US72) or alarm (US73) signal outputs

APPLICATIONs
◾ For 12V/24V Fans