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參數資料
| 型號： | SI9993CS |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | 12-V VCM/Spindle Motor Driver for Large Capacity HDD |
| 中文描述： | 12 V的氯乙烯/主軸電機驅動器的大容量硬盤 |
| 文件頁數： | 4/16頁 |
| 文件大?。?/td> | 419K |
| 代理商： | SI9993CS |
Si9993CS
Vishay Siliconix
S-60752–Rev. A, 05-Apr-99
4
FaxBack 408-970-5600, request 70653
www.siliconix.com
System Manager
VDD Undervoltage Detection
Threshold (High-to-Low)
UV
ADJ
Unconnected
4.500
4.625
4.750
V
VDD Hysteresis
0.05
VCC Undervoltage Detection
Threshold (High-to-Low)
8.5
9.25
10.0
VCC Hysteresis
0.2
POR Time-out
t
POR
PORCAP = 0.5 μF
350
500
650
ms
Delay Time from PWR Failure
to POR Active
t
POR
0.8
1.0
μS
POR Charging Current
I
POR
2
μA
POR Comparator Hysteresis
1.0
V
Adjustable Internal Spindle
Brake Delay Time
t
spindly
V
CLAMP
= 3.0 to 13.2 V
DD
= V
CC
= 0 V
D3D2(REG1) = 01
192
ms
Internal VCM Retract Delay
Time
t
vcmdly
D5D4(REG1) = 01
8
V
TEST
Leakage
I
VTEST
V
CLAMP
= 3.0 V, V
= V
CC
= 0 V
V
TEST
= 10 V
1
μA
5-V Reference Initial Power-On
Tolerance
V
REF
V
REF(IN)
= V
REF(OUT)
(Internal Reference)
I
OUT
4.75
5.00
5.25
V
5-V Reference Drift from Initial
Power-On Tolerance
-1.5
1.5
%
VCM Driver
Transconductance
G
mVCM
I
OS
V
REF/2
I
MOTOR
= 1 A, D5D4(REG0) = 11
D5D4(REG0) = 11
1.52
1.60
1.68
A/V
Output Offset Current
-25
0
25
mA
DAC Reference Output
R
LOAD
= 100 k
2.09
2.2
2.31
V
VCMDACIN Input Range
+VCMDACIN or -VCMDACIN to GND
0.1
5.0
VCMDACIN Input Bias Current
I
b
(L/S)
R
FB
50
nA
Feedback Resistance
Internal Resistor from IVCMS to COMP1
12
k
3-dB Bandwidth
L/S, I/S and Comp Amp
1.0
MHz
Class B Power Amp
0.4
CMRR of Current Sense
Amplifier
CM Input = 0 to V
CC
70
dB
Head Retract Voltage Clamp
I
MOTOR
= 60 mA, D7D6(REG1) = 00
0.32
0.4
0.48
V
Short Circuit Head Retract
Current
120
180
mA
Current Sense Amplifier Zero
Output Voltage
V(IVCMS)
I
= 0
D7D6(REG0) = 00, D7D6(REG5) = 11
I
= 0
D7D6(REG0) = 00, D7D6(REG5) = 11
2.32
2.5
2.68
V
Current Sense Amplifier
Output Gain Ratio
V(IVCMS)/
V(RSV)
dc Gain
2.67
V/V
SPECIFICATIONS
Operating Conditions:
V
CC
= V
= 12 V ±10%, V
= 5 V ±10%, V
= V
, RSS = RSV = 0.2
±1%,
R
SRADJ
= 20 k
±1%, Si9942-Si9430 LITTLE FOOT Driver, F
SYSCLK
= 5 MHz, T
A
= 0 to 70°C
Parameter
Symbol
Specific Test Conditions
Limits
Unit
Min
a
Typ
b
Max
a
REF
-----------------
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