C
HEETAH
15K.7 SAS P
RODUCT
M
ANUAL
, R
EV
. F
19
Table 4
450 GB DC power requirements
N
OTES
3 G
BIT MODE
6 G
BIT MODE
(A
MPS
)
(A
MPS
)
(A
MPS
)
(A
MPS
)
Voltage
+5V
+12V [2]
+5V
+12V [2]
Regulation
[5]
±5%
±5% [2]
±5%
±5% [2]
Avg idle current
[1] [7]
0.39
0.68
0.41
0.66
Maximum starting current
(peak DC) DC
3
σ
[3]
0.65
1.94
0.67
1.94
(peak AC) AC
3
σ
[3]
0.94
3.91
0.96
3.89
Delayed motor start (max) DC
3
σ
[1] [4]
0.54
0.04
0.56
0.04
Peak operating current (random read):
Typical DC
[1][6]
[1]
0.45
1.01
0.47
1.02
Maximum DC
3
σ
[1]
0.48
1.08
0.51
1.06
Maximum DC (peak)
3
σ
1.28
2.90
1.30
2.84
Peak operating current (random write):
Typical DC
[1][6]
[1]
0.52
0.90
0.55
0.89
Maximum DC
3
σ
[1]
0.56
0.93
0.58
0.91
Maximum DC (peak)
3
σ
1.24
2.78
1.26
2.84
Peak operating current (sequential read):
Typical DC
[1][6]
[1]
0.98
0.69
1.03
0.67
Maximum DC
3
σ
[1]
1.04
0.70
1.10
0.68
Maximum DC (peak)
3
σ
1.36
1.10
1.44
1.10
Peak operating current (sequential write):
Typical DC
[1][6]
[1]
0.95
0.69
0.98
0.67
Maximum DC
3
σ
[1]
0.99
0.70
1.02
0.68
Maximum DC (peak)
3
σ
1.26
1.10
1.30
1.12
