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KA3120 - SPINDLE & VOICE COIL MOTOR ONE CHIP DRIVER

Datasheet Summary

Description

Pin No.

) SUBGND RRET SENSEOUT PGND VCM(+) ERRIN VDD ERROUT SUBGND W I/O I I O O I O O I I I

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Datasheet preview – KA3120

Datasheet Details

Part number KA3120
Manufacturer Fairchild Semiconductor
File Size 848.18 KB
Description SPINDLE & VOICE COIL MOTOR ONE CHIP DRIVER
Datasheet download datasheet KA3120 Datasheet
Additional preview pages of the KA3120 datasheet.

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Full PDF Text Transcription

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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 www.DataSheet4U.com and the power management circuit always monitors the power supply voltages.
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