參數(shù)資料
型號(hào)： KA3120
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類(lèi)： 運(yùn)動(dòng)控制電子
英文描述： SPINDLE & VOICE COIL MOTOR ONE CHIP DRIVER
中文描述： VOICE COIL MOTOR CONTROLLER, 2 A, PQFP48
封裝： 14 X 14 MM, HEAT SINK, QFP-48
文件頁(yè)數(shù)： 5/43頁(yè)
文件大?。?/td> 786K
代理商： KA3120
HDD PRODUCTS
KA3120
5
PRELIMINARY
MIC-99D001
January 1999
PIN DESCRIPTION
Pin No.
Symbol
I/O
Description
1
PWMSF
I
PWM input for spindle soft switching
2
CFSF
Capacitor for spindle PWM soft switching filter
3
ADJ
Reference voltage adjustable
4
SENSE5
I
Adjustable threshold voltage to 5V
5
VDD
5V power supply
6
FG
O
Frequency generation to spindle speed
7
VREF
O
Voltage reference output for ASIC power
8
MCLK
I
Clock from ASIC for switching
9
VCMOFF
O
VCM output offset monitoring pin
10
POR
O
Power On Reset
11
CDLY
Delay capacitor for power on reset
12
GAINSEL
I
VCM Amplifier gain selection
13
PWMH
I
PWM signal input (MSB)
14
PWML
I
PWM signal input (LSB)
15
CFVCM
Filter capacitor for VCM PWM control
16
CRET
Delay capacitor for retract
17
V
CC
FILOUT
12V power line
18
O
VCM PWM output
19
SENSE
I
VCM current sense input
20
CRET2
Power for VCM retract
21
PVCC
12V power line for VCM output
22
VCM(
)
VCM negative output
23
SUBGND
Ground
24
RRET
I
Adjustable maximum retract current
25
SENSEOUT
O
VCM current sense Amplifier output
26
PGND
Ground
27
VCM(+)
VCM positive output
28
ERRIN
I
VCM error Amplifier negative input
29
V
DD
5V power supply
30
ERROUT
O
VCM error Amplifier output
31
SUBGND
Ground
32
W
O
Spindle motor W phase output
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