Seagate ST300MM0026 Savvio 10K.2 SAS Product Manual - Page 27

Physical/electrical specifications

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7.0 Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the drive. 7.1 None. AC power requirements 7.2 DC power requirements The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector. Table 12: ST9146802SS DC power requirements Voltage Regulation Avg idle current DCX Maximum starting current (peak DC) DC (peak AC) AC Delayed motor start (max) DC Operating current: Typical DCX Maximum DC Maximum (peak) DC Notes [5] [1] [7] ST9146802SS 1.5Gb mode (Amps) (Amps) +5V +12V [2] ±5% ±5% [2] 0.79 0.15 ST9146802SS 3.0Gb mode (Amps) (Amps) +5V +12V [2] ±5% ±5% [2] 0.77 0.15 3σ [3] 0.87 1.59 0.85 1.59 3σ [3] 1.22 2.01 1.43 2.02 3σ [1] [4] 0.65 0.02 0.68 0.03 [1] [6] 0.76 0.37 0.79 0.39 3σ [1] 0.78 0.40 0.83 0.43 3σ 1.34 1.19 1.41 1.21 Gen 3.5 LPSS measured data (latest available) plus 12V max start current margins of .15A for DC and .20A for AC. All others have 10% margin added. Savvio 10K.2 SAS Product Manual, Rev. E 21

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Savvio 10K.2 SAS Product Manual, Rev. E
21
7.0
Physical/electrical specifications
This section provides information relating to the physical and electrical characteristics of the drive.
7.1
AC power requirements
None.
7.2
DC power requirements
The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive
connector.
Gen 3.5 LPSS measured data (latest available) plus 12V max start current margins of .15A for DC and .20A for AC. All others have 10% margin added.
Table 12:
ST9146802SS
DC power requirements
Notes
ST9146802SS
1.5Gb mode
ST9146802SS
3.0Gb mode
(Amps)
(Amps)
(Amps)
(Amps)
Voltage
+5V
+12V [2]
+5V
+12V [2]
Regulation
[5]
±5%
±5% [2]
±5%
±5% [2]
Avg idle current DC
X
[1] [7]
0.79
0.15
0.77
0.15
Maximum starting current
(peak DC) DC
3
σ
[3]
0.87
1.59
0.85
1.59
(peak AC) AC
3
σ
[3]
1.22
2.01
1.43
2.02
Delayed motor start (max) DC
3
σ
[1] [4]
0.65
0.02
0.68
0.03
Operating current:
Typical DC
X
[1] [6]
0.76
0.37
0.79
0.39
Maximum DC
3
σ
[1]
0.78
0.40
0.83
0.43
Maximum (peak) DC
3
σ
1.34
1.19
1.41
1.21