ATS177 is an integrated Hall effect latched sensordesigned for electronic commutation of brush-lessDC motor applications. The device includes anon-chip Hall voltage generator for magnetic sensing,a comparator that amplifies the Hall voltage, and aschmitt trigger to provide switching hysteresis fornoise rejection, and open-collector output. Aninternal bandgap regulator is used to providetemperature compensated supply voltage forinternal circuits and allows a wide operating supply range.If a magnetic flux density larger than threshold Bop, DO is turned on(low). The output state is held until a magnetic flux density reversal falls below Brp causing DO to be turned off (high).
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