General Description
BD63441AFU is a three-phase sensorless fan motor driver that is suited for speed controllable fans.
It features a sensorless drive which doesn’t require a hall device as a location detection sensor. Furthermore, there is a PWM soft switched driving mechanism for silent operation and low vibrations.

FEATUREs
◾ Pre-driver compatible for external Tr.
◾ Sensorless drive and PWM soft switching
◾ Under voltage lock out (UVLO)
◾ Rotational speed control by DC input voltage
◾ Current limit
◾ Soft start
◾ Lock protection and automatic restart
◾ Quick start
◾ Rotational speed pulse signal (FG) output

APPLICATIONs
◾ For 12V fan motors for desktop PC, server, and general consumer equipment.