Description
BD7959EFV are ICs, developed for the spindle motor, actuator coil, tilt coil, stepping motor, SA (Spherical Aberration) motor and the loading motor drive of the Blu-ray Drive. The spindle, stepping and SA motor driver use power MOSFET to reduce power consumption and the actuator, tilt, and loading driver use a linear BTL drive system to reduce noise.

FEATUREs
1) Correspondence to the Blu-ray drive control with built-in 9ch.
2) The spindle motor driver achieves low noise by ROHMs own energizing method.
3) Highly effective spindle, stepping and SA driver is achieved by PWM control driver. And the output current detection resistance of stepping and SA driver is unnecessary by built-in internal detection circuit.
4) The actuator , tilt and loading driver achieve low noise by using linear BTL drive system.
5) ON/OFF of loading and other channels, brake mode of spindle driver and standby mode are selectable by the two control terminals.
6) Built-in thermal-shut down circuit.
7) Built-in triangular wave generator.
8) Improved heat radiation efficiency utilizing HTSSOP package.

APPLICATIONs
   Optical disk equipment, such as Blu-ray recorders