Seagate Cheetah ST3146854, User Manual

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Cheetah 15K.4 SCSI Product Manual, Rev. D 25
6.0 Physical/electrical specifications
This section provides information relating to the physical and electrical characteristics of the Cheetah 15K.4
SCSI drive.
6.1 AC power requirements
None.
6.2 DC power requirements
The voltage and current requirements for a single drive are shown in the following table. Values indicated apply
at the drive power connector. The table shows current values in Amperes.
Table 12: ST3146854LC DC power requirements
Notes
SE mode LVD mode
Voltage +5 V +12 V +5 V +12 V
Regulation [5] ±5% ±5% [2] ±5% ±5% [2]
Average idle current DC X [1][7] 0.53 0.78 0.53 0.78
Maximum starting current
(peak DC) DC
(peak AC) AC
3
σ
3
σ
[3]
[3]
0.74
1.10
1.89
3.87
0.74
1.10
1.89
3.79
Delayed motor start (max) DC
3
σ
[1] [4] 0.49 0.04 0.49 0.05
Peak operating current
DC
Maximum DC
Maximum (peak) DC
X
3
σ
3
σ
[1] [6]
[1]
0.67
0.71
1.28
1.17
1.20
2.90
0.68
0.71
1.26
1.18
1.20
2.90