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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
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.
Table 12:
ST3450856SS
Voltage
Regulation
Avg idle current DCX
Maximum starting current
(peak DC) DC
(peak AC) AC
Delayed motor start (max) DC 3σ
Peak operating current:
Typical DCX
Maximum DC
Maximum (peak) DC
20
DC power requirements
ST3450856SS
1.5 Gbit mode
Notes
(Amps)
+5V
[5]
±5%
[1] [7]
0.55
3σ
[3]
0.91
3σ
[3]
1.13
[1] [4]
0.60
[1][6]
[1]
0.62
3σ
[1]
0.64
3σ
1.16
ST3450856SS
3 Gbit mode
(Amps)
(Amps)
+12V [2]
+5V
±5% [2]
±5%
0.75
0.57
1.93
0.76
4.18
0.87
0.04
0.63
1.19
0.64
1.21
0.67
2.70
1.14
Cheetah 15K.6 SAS Product Manual, Rev. C
(Amps)
+12V [2]
±5% [2]
0.75
1.93
4.36
0.04
1.19
1.21
2.74
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