Mozart, 12v Disk Drive Spindle & Vcm, Power & Control

The L7200 Mozart integrates into a single chip both spindle and VCM controllers as well as power stag- es. The device is designed for 12V disk drive appli- cation requiring up to 2.5A of spindle and 1.7A of VCM peak currents. The device is based on the sinu- soidal driving of the spindle motor. This is realized digitally by the SMOOTHDRIVE SYSTEM. A serial port with up to 40 MHz capability provides easy Interface to the Microprocessor A Register con- trolled Frequency Locked Loop (FLL) allows flexibility in setting the spindle speed. Integrated BEMF pro- cessing, digital Filter digital masking, digital delay, and sequencing minimize the number of external components required. By STMicroelectronics