MH 477
Single Phase Fan Motor Driver IC
MH477 is the integrated Hall sensor with output drivers designed for electrical ...
MH 477
Single Phase Fan Motor Driver IC
MH477 is the integrated Hall sensor with output drivers designed for electrical commutation of brush-less DC motor application. The devices are included as follows: on-chip Hall voltage generator for magnetic sensing; the amplifier that amplifies the Hall voltage; a comparator is to provide switching hysteresis for noise rejection; the bi-direction drivers for sinking and driving large current load. Internal band gap
regulator is used to provide temperature compensated bias for internal circuits and allows a wide operating supply voltage range.
If a magnetic flux density larger than threshold Bop, DO is turned to sink and DOB is turned to drive. The output state is held until a magnetic flux density reversal falls below Brp causing DO to be turned to drive and DOB turned to sink.
MH477 is rated for operation over-temperature range from -20 °C to 85 °C, also the thermal shut-down function is included, and voltage range from 3.5V to 20V. The devi...