General Description

ATS177 is an integrated Hall effect latched sensor designed for electronic commutation of brush-less DC motor applications. The device includes an on-chip Hall voltage generator for magnetic sensing, a comparator that amplifies the Hall voltage, and a schmitt trigger to provide switching hysteresis for noise rejection, and open-collector output. An internal bandgap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range.

Features

- 3.5V to 20V DC operation voltage

- Temperature compensation 

- Wide operating voltage range

- Open-Collector pre-driver

- 25mA maximum sinking output current.

- Reverse polarity protection

- Package: SIP3, SOT23

Applications

- Brush-less DC Motor

- Brush-less DC Fan

- Revolution counting

- Speed measurement