[Melexis]

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