General Description

AH276 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 AH276

- 400mA (avg) output sink current

- Built-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