Seagate Cheetah 15K.5 SAS Series, Product Manual

Page: 31 / 90

Cheetah 15K.5 SAS Product Manual, Rev. C 23
6.0 Physical/electrical specifications
This section provides information relating to the physical and electrical characteristics of the drive.
6.1 AC power requirements
None.
6.2 DC power requirements
The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive
connector.
Gen 1.6 data. 0.15A DC and 0.2A AC 12V max start current margin added.
Table 2:
ST3300655SS
DC power requirements
Notes
ST3300655SS
1.5 Gbit mode
ST3300655SS
3 Gbit mode
(Amps) (Amps) (Amps) (Amps)
Voltage +5V +12V [2] +5V +12V [2]
Regulation [5] ±5% ±5% [2] ±5% ±5% [2]
Avg idle current DCX [1] [6] 0.76 0.81 0.73 0.80
Maximum starting current
(peak DC) DC 3
σ
[3] 0.89 1.97 0.87 1.97
(peak AC) AC 3
σ
[3] 1.18 3.19 1.38 3.27
Delayed motor start (max) DC 3
σ
[1] [4] 0.63 0.03 0.67 0.03
Peak operating current:
Typical DCX [1] 0.76 1.14 0.79 1.15
Maximum DC 3
σ
[1] 0.77 1.19 0.80 1.18
Maximum (peak) DC 3
σ
1.54 2.84 1.56 2.80