GENERAL DESCRIPTION

MA177R is an integrated Hall effect latched sensor designed for electronic commutation

of brush-less DC motor applications. The device is using HV BCD process 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

- 3.3V to 26V DC Operation Voltage

- Temperature Compensation

- Wide Operating Voltage Range

- Open-Drain Pre-Driver

- 25mA Maximum Sinking Output Current.

- -40°C to 125°C Operating Temperature

- Low Profile SOT23-3L Package ( Green and Lead Free )