SI9993CS Datasheet (Vishay Siliconix) - 12-V VCM/Spindle Motor Driver for Large Capacity HDD

SI9993CS, 12-V VCM/Spindle Motor Driver for Large Capacity HDD

The Si9993CS consists of a 3-phase brushless dc motor (spindle) PWM controller and a linear/PWM transconductance stage suitable for driving a voice coil motor (head actuator).

To meet the power handling capability required for a high capacity hard disk drive, both drivers utilize external LITTLE FOO

SI9993CS Features

* 12-V Motor Supply

* Blocking Schottky Diode Replaced by External Synchronous Rectifier

* Spindle Motor Driver Features:

* External LITTLE FOOT® Drivers for High Current/Power Application

* Constant Off-Time PWM Current Drive Minimizing Power Dissipation