KA3120 查看數據表（PDF） - Fairchild Semiconductor

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产品描述 (功能)

生产厂家

KA3120

SPINDLE & VOICE COIL MOTOR ONE CHIP DRIVER

Fairchild Semiconductor 

HDD PRODUCTS

EQUIVALENT CIRCUITS (Continued)

Filtered VCM PWM command output

VDD

+

#18

−

Internal

DEC OUT

PRELIMINARY

KA3120

VCM current sense input

VCC

#19

Capacitor for retract power

VCC

#20

UV W

30Ω

Retract

Block

Max. retract current set input

VCC

27Ω

20k

#24

Spindle motor output compensation Capacitor

VDD

VCC

#38

Spindle motor output and Back EMP sensing part

VCC

#32, 34, 37

VCC

60Ω

#33

VCC

60Ω

#36

Internal 4.2V

Retract

Block

−

+

+

−

MIC-99D001

9

January 1999

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