ATS177 is anintegrated Hall effect latched sensor designed for electroniccommutation of brush-less DC motor applications. The deviceincludes an on-chip Hall voltage generator for magnetic sensing, acomparator that amplifies the Hall voltage, and a schmitt triggerto provide switching hysteresis for noise rejection, andopen-collector output. An internal bandgap regulator is used toprovide temperature compensated supply voltage for internalcircuits and allows a wide operating supply range.
If a magnetic flux density larger than threshold Bop, DO is turnedon (low). The output state is held until a magnetic flux densityreversal falls below Brp causing DO to be turned off(high).
Features
3.5V to 20V DCoperation voltage
Temperature compensation
Wide operating voltage range
Open-Collector pre-driver
25mA maximum sinking output current
Reverse polarity protection
Lead Free Package: SIP-3L
Lead Free Finish/ RoHS Compliant (Note 1)
Applications
Brush-less DCMotor
Brush-less DC Fan
Revolution counting
Speed measurement
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