GENERAL DESCRIPTION

MA177H 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

band-gap regulator is used to provide temperature compensated supply voltage for internal

circuits and allows a wide operating supply range.

If a magnetic flux density larger than threshold Bop, OUT is turned on(low). The output

state is held until a magnetic flux density reversal falls below Brp causing OUT to be turned

off (high).

FEATURES

- 4V to 26V DC Operation Voltage

- Temperature Compensation

- Wide Operating Voltage Range

- Open-Collector Pre-Driver

- 25mA Maximum Sinking Output Current.

- -40°C to 150°C Operating Temperature

- SIP-3L(TO-92S) Package( Green and Lead Free )