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參數(shù)資料
| 型號： | Si9990ACS |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | 5-V VCM Driver/Spindle Motor Driver For 1.8- and 2.5-Hard Disk Drives(用于1.8V和2.5V的硬盤驅(qū)動的5V語音線圈電機(jī)驅(qū)動器/心軸電機(jī)驅(qū)動器) |
| 中文描述： | 5V的氯乙烯驅(qū)動器/主軸電機(jī)驅(qū)動器1.8和2.5硬盤驅(qū)動器（用于1.8伏和2.5伏的硬盤驅(qū)動的5V的語音線圈電機(jī)驅(qū)動器/心軸電機(jī)驅(qū)動器） |
| 文件頁數(shù)： | 5/11頁 |
| 文件大小： | 345K |
| 代理商： | SI9990ACS |
Si9990ACS
Vishay Siliconix
FaxBack 408-970-5600, request 70655
www.siliconix.com
S-60752—Rev. C, 05-Apr-99
5
Notes
a. 50-k
load is in addition to the R
SPIN
load.
Power Supply Monitor
V
DD
Undervoltage Threshold
Hysteresis
Overtemperature Protection
3.7
3.9
4.1
V
70
mV
Trip Point
165
°C
Hystersis
Head Retract Function (Undervoltage Or Sleep Mode; C
DLY
tied to V
CLAMP
)
20
I
RET
Bias Voltage
V
RET
0.25
V
Retract Output Current Limit
I
OUT+
V
OUT-
R
RET
= 2.5 k
, V
OUT+
= 0.2 V
I
OUT-
= -20 mA
V
CLAMP
= 3 V, R
RET
= 2.5 k
V
DD
14
20
26
mA
Retract Output Voltage Limit
0.31
0.44
0.5
V
Emergency Retract Supply Current
I
CLAMP
2
4
mA
Retract Supply Voltage Range
V
CLAMP
I
CHS
1.41
5
5.5
V
CHS Leakage
dc to dc Converter (Charge Pump)
V
DD
= 0 V, V
CLAMP
= 3 V, V
CHS
= 10 V
2
μA
Output Voltage
Flyback Clamp
CHS
I
CHS
= -5 mA, V
DD
= V
MOT
= 4.5 V
11
V
Flyback Clamp Switch Resistance
Normal Mode, I
CLAMP
= 0.1 A
I
CLAMP
= 0.1 A
4
Clamp Zener Voltage
Uncommitted Amplifier (A
2
)
Input Offset Voltage
V
Z
9.1
V
V
OS
I
B
-15
0
+15
mV
Input Bias Current
50
nA
Unity Gain Bandwidth
R
LOAD
= 50 k
, C
LOAD
= 100 pF to V
R
1
MHz
Slew Rate
SR
1
V/μs
Power Supply Rejection Ratio
PSRR
@ 10 kHz
50
dB
Open Loop Voltage Gain
A
VOL
R
= 50 k
to V
,
Measured at V
R
±1.8 V
60
Output Voltage Swing
V
O
R
LOAD
= 50 k
to V
R
0.2
V
-
0.2
V
Timing
Chip Select to Clock Setup Time
t
CS
t
DS
t
DH
See Timing Diagram, Figure 1.
160
ns
Data Setup Time
160
Data Hold Time
160
Head Retract Time-Out (Brake Delay)
t
DLY
t
DLY
= 514 k
x C
DLY
,
C
= 0.18 μF,
DD
= 0 V, V
CLAMP
= 1.41 to 5.5 V
55
100
240
ms
SPECIFICATIONS
Parameters
Symbol
Test Conditions Unless
Specified
V
ADIN
= V
DD
= V
MOT
= 5 V
±
10%
R
R
SPIN
= 17 k
, T
A
= 0 to 70
°
C
Limits
Unit
Min
Typ
Max
I
RET
V
RET
---------------
, I
OUT
200
I
RET
×
(
)
–
=
=
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