Seagate BARRACUDA 2LP, Руководство по эксплуатации продукта

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Barracuda 2LP Product Manual, Rev. D 33
7.0 Physical/electrical specifications
This section provides information relating to the physical and electrical
characteristics of Barracuda 2LP drives.
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’s power connector.
N/W/WC ND/WD/DC
Voltage 5V [8] 12V 5V [8] 12V
regulation [5] Notes
±±±±±
5%
±±±±±
5%
[2]
±±±±±
5%
±±±±±
5% [2]
Amps
Max operating current DC 3
σ
[1] 0.93 0.6 1.17 0.6
Avg idle current
DC X [1] [12] 0.63 0.49 0.70 0.49
Max start current
(peak) DC 3
σ
[3] [6] 0.93 1.35 1.0 1.35
(peak) AC 3
σ
[3] – 1.93 – 1.93
Delay motor start (max)
DC 3
σ
[1] [4] 0.88 0.12 0.92 0.12
Peak operating current
Typical DC X [1] [10] 0.91 0.57 1.13 0.57
Maximum DC 3
σ
[1] 0.93 0.60 1.17 0.60
Maximum (peak) AC 3
σ
1.0 1.56 1.95 1.56
Track following at
OD DC X [1] 0.91 0.5 0.99 0.50
ID DC X [1] 0.88 0.51 0.96 0.51
Read track
OD DC 3
σ
[1] [14] 0.96 0.53 1.35 0.53
AC 3
σ
1.03 0.73 1.95 0.73
Seeking
Typical DC X [1] [13] 0.89 0.78 0.99 0.78
Maximum DC 3
σ
[1] 0.92 0.82 1.10 0.82
Maximum (peak) AC 3
σ
0.95 1.60 1.67 1.60
Notes:
[1] Measured with average reading DC ammeter. Instantaneous
+
12V
current peaks will exceed these values.
[2] A –10% tolerance is permissible during initial start of the spindle and
must return to
±
5% before 7,200 RPM is reached. The
±
5% must be
maintained after the drive signals that its power-up sequence has been
completed and that it can accept selection by the host initiator.
[3] See Figure 14.
[4] This condition occurs when the Motor Start Option is enabled and the
drive has not yet received a Start Motor command.