Description

ATS177 is an integrated Hall-Effect latch 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 provides a temperature compensated supply voltage for internal circuits and allows a wide operating supply range.

Features

• Bipolar Hall-Effect latch sensor

• 3.5V to 20V DC operating voltage

• Temperature compensation

• Open-collector pre-driver

• 25mA maximum output sink current

• Built-in reverse polarity protection

• Operating temperature: -40°C to +125°C

• SIP-3L package

• Green Molding Compound (No Br, Sb) (Note 1)

Applications

• Brush-less DC Motor

• Brush-less DC Fan

• Revolutioncounting

• Speed measurement