8909 Description
It provides plete back-EMF sensing, mutation control, and drive of a spindle motor, and provides for an orderly spindown in the event of supply-voltage removal. Energy for retracting the heads is regenerated from the spinning motor, while a controlled delay allows for a full retract before dynamic braking. The pulse-width modulation system and power DMOS outputs provide control of high currents with minimum power...
8909 Key Features
- 11 DATA 12 13 VICMD VM AMUX 14