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KA3120

Part Number	KA3120
Manufacturer	Fairchild Semiconductor
Description	SPINDLE & VOICE COIL MOTOR ONE CHIP DRIVER
Published	Aug 25, 2008
Detailed Description	PRELIMINARY HDD PRODUCTS KA3120 SPINDLE & VOICE COIL MOTOR ONE CHIP DRIVER The KA3120 is an ASIC combination chip, wh...
Datasheet	KA3120 PDF File

Overview

PRELIMINARY HDD PRODUCTS KA3120 SPINDLE & VOICE COIL MOTOR ONE CHIP DRIVER The KA3120 is an ASIC combination chip, which was designed for the HDD, includes the following functions: spindle motor drive, voice coil motor drive, retract and power management.
To drive and control the spindle, the digital ASIC provides the appropriate control signals (Start up, commutation, speed control) to the KA3120.
The spindle motor condition is monitored by the FG output and the motor speed control is accomplished via the PWMSP input.
The ASIC controls the voice coil motor current via PWMH and PWML inputs com and the power management circuit always monitors the power supply voltages.
48-Q...

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