Seagate ST336807FC Cheetah 10K.7 FC Product Manual - Page 38

Table 12, DC power requirements, Table 13

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Table 12: ST3146707FC DC power requirements Notes Voltage Regulation [5] Avg idle current DC X [1] [7] Maximum starting current (peak DC) DC 3σ [3] (peak AC) AC 3σ [3] Delayed motor start (max) DC 3σ [1] [4] Peak operating current: Typical DC X [1] [6] Maximum DC 3σ [1] Maximum (peak) DC 3σ ST3146707FC 1 Gbit (Amps) (Amps) +5V +12V [2] ±5% ±5% [2] 0.86 0.44 1.02 2.02 1.32 4.15 0.60 0.09 0.89 0.91 0.91 0.92 1.70 2.50 ST3146707FC 2 Gbit (Amps) +5V ±5% 0.92 (Amps) +12V [2] ±5% [2] 0.44 1.08 2.02 1.46 3.96 0.62 0.09 0.94 0.91 0.97 0.92 1.78 2.54 Table 13: ST373207FC DC power requirements Notes Voltage Regulation [5] Avg idle current DC X [1] [7] Maximum starting current (peak DC) DC 3σ [3] (peak AC) AC 3σ [3] Delayed motor start (max) DC 3σ [1] [4] Peak operating current: Typical DC X [1] [6] Maximum DC 3σ [1] Maximum (peak) DC 3σ ST373207FC 1 Gbit (Amps) +5V ±5% 0.86 1.02 1.18 0.60 0.93 0.94 1.78 (Amps) +12V [2] ±5% [2] 0.34 1.58 3.48 0.09 0.77 0.78 2.44 ST373207FC 2 Gbit (Amps) +5V ±5% 0.92 (Amps) +12V [2] ±5% [2] 0.34 1.08 1.57 1.50 3.57 0.62 0.09 0.99 0.80 1.00 0.81 1.86 2.50 [1] Measured with average reading DC ammeter. Instantaneous +12V current peaks will exceed these values. Power supply at nominal voltage. Number of drives tested = 6, 35 Degrees C ambient. 26 Cheetah 10K.7 FC Product Manual, Rev. D

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26
Cheetah 10K.7 FC Product Manual, Rev. D
[1]
Measured with average reading DC ammeter. Instantaneous +12V current peaks will exceed these val-
ues. Power supply at nominal voltage. Number of drives tested = 6, 35 Degrees C ambient.
Table 12:
ST3146707FC
DC power requirements
ST3146707FC
ST3146707FC
1 Gbit
2 Gbit
Notes
(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]
0.86
0.44
0.92
0.44
Maximum starting current
(peak DC) DC
3
σ
[3]
1.02
2.02
1.08
2.02
(peak AC) AC
3
σ
[3]
1.32
4.15
1.46
3.96
Delayed motor start (max) DC
3
σ
[1] [4]
0.60
0.09
0.62
0.09
Peak operating current:
Typical DC
X
[1] [6]
0.89
0.91
0.94
0.91
Maximum DC
3
σ
[1]
0.91
0.92
0.97
0.92
Maximum (peak) DC
3
σ
1.70
2.50
1.78
2.54
Table 13:
ST373207FC
DC power requirements
ST373207FC
ST373207FC
1 Gbit
2 Gbit
Notes
(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]
0.86
0.34
0.92
0.34
Maximum starting current
(peak DC) DC
3
σ
[3]
1.02
1.58
1.08
1.57
(peak AC) AC
3
σ
[3]
1.18
3.48
1.50
3.57
Delayed motor start (max) DC
3
σ
[1] [4]
0.60
0.09
0.62
0.09
Peak operating current:
Typical DC
X
[1] [6]
0.93
0.77
0.99
0.80
Maximum DC
3
σ
[1]
0.94
0.78
1.00
0.81
Maximum (peak) DC
3
σ
1.78
2.44
1.86
2.50