Datasheet Summary
One-chip motor driver
Rev. 01
- 30 September 2004 Preliminary data sheet
1. General description
The SA56203 is a one-chip motor driver IC that is capable of driving all motors of CD or DVD systems e.g. spindle, sled and loading motors and actuators on the optical pick-up unit. The driver intended for the 3-phase, brushless, Hall-mutated spindle motor uses PWM switching. Internal regeneration of the back EMF of the spindle motor enables the driver to operate in current-steering mode without using external power-dissipating sense resistors. The driver for the 2-phase sled stepper motor operates in current-steering PWM mode. In addition the IC contains four full-bridge linear...