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NXP Semiconductors - One-chip motor driver

Numéro de référence SA56203S
Description One-chip motor driver
Fabricant NXP Semiconductors 
Logo NXP Semiconductors 





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SA56203S fiche technique
SA56203S
One-chip motor driver
Rev. 01 — 31 January 2005
www.DataSheet4U.com
Preliminary data sheet
1. General description
The SA56203S 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-commutated spindle motor uses
True-Silent PWM. This proprietary technology ensures that all 3-phase motor currents are
sinusoidal resulting in an optimally silent driver. 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
channels that can be used to drive a loading motor and 3D actuators (focus, tracking and
tilt).
The SA56203S is available in an exposed die pad HTSSOP56 package.
2. Features
s True-Silent PWM spindle motor driver
s Low heat generation due to power-efficient direct full-bridge switching of spindle motor
driver
s Controlled spindle motor current during acceleration and brake
s Reverse torque brake function (full bridge)
s Adjustable spindle motor current limiter
s Internal regeneration for EMF of spindle motor
s Current-steering PWM controlled stepper motor driver for sled
s Four class-AB linear channels for loading motor and 3D actuators (focus, tracking and
tilt)
s Tracking actuator driver with back EMF amplifier
s Loading motor driver with transresistance amplifier for loading current
s Low on-resistance D-MOSFET output power stages
s Built-in thermal shutdown and thermal warning
s Interfaces to 3 V and 5 V logic
s Package with low thermal resistance to heatsink (reflowable die pad)
s Lead free package.

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