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General Description

ATS276/277 are integrated Hall sensors with output drivers, mainly designed for electronic commutation of brush-less DC Fan. This IC internally includes the regulator, protecting diode, Hall plate, amplifier, comparator, and a pair of complementary open-collector outputs (DO, DOB).

Features

- On-chip Hall sensor with two different sensitivity and hysteresis settings for ATS276/277

- 3.5V to 20V operating voltage

- 400mA (avg) output sink current

- Build-in protecting diode only for chip reverse power connecting

--20°C to 85°C operating temperature

- Low profile 4 pin SIP package

Applications

- Dual-coil Brush-less DC Motor

- Dual-coil Brush-less DC Fan

- Revolution Counting

- Speed Measurement