KA3120 - SPINDLE & VOICE COIL MOTOR ONE CHIP DRIVER

Fairchild (now onsemi)

General 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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KA3120 spindle & voice coil motor one chip driver by Fairchild (now onsemi) - Datasheet Preview

Datasheet Details

Part number	KA3120
Manufacturer	Fairchild (now onsemi)
File Size	848.18 KB
Description	SPINDLE & VOICE COIL MOTOR ONE CHIP DRIVER
Datasheet	KA3120 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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.