Motor Driver IC 54-Pin HTSSOP T/R

ROHM"s half-height drive sensor less motor driver IC BD7776ARFS use proprietary circuitry in order to reduce the number of parts required to drive the spindle motor in desktop PC and recorder disk drives. This results in high-quality drive performance with low spindle motor startup time and operational stability. ·The hall sensor is unnecessary by three phase sensor-less drive system.
·The spindle motor driver achieves the stability high speed start by the drive system of an original Rohm.
·The spindle and the stepping driver can highly effective drive adopting the PWM drive system,
and the output current detection resistance is unnecessary because the internal detection circuit is built in.
·The actuator, the tilt, and the loading driver use a linear BTL drive system and achieves a low noise.
·ON/OFF of the loading and other channels and spindle driver"s brake mode switch and the standby mode
can be selected with two control terminals.
·Built in thermal-shut down circuit.
·Built in triangular wave generation circuit.
·It improves the heat radiation efficiency by adopting the HTSSOP package that the thermal conductivity is good in the thin type.