Seagate Constellation ES.1 Serial ATA Product Manual page 16

Table 3: DC power requirements
1TB Drive
Voltage
Regulation
Avg Idle Current *
Advanced Idle Current *
Idle_A
Idle_B
Idle_C
Standby
Transition Current *
Idle_A (Active)
Idle_B (Active)
Idle_C (Active)
Standby (Active)
Average Sleep Current
Maximum Start Current
DC (peak DC)
AC (Peak DC)
Delayed Motor Start (DC max)
Peak operating current (random read):
Typical DC
Maximum DC
Maximum DC(peak)
Peak operating current (random write)
Typical DC
Maximum DC
Maximum DC(peak)
Peak operating current (sequential read)
Typical DC
Maximum DC
Maximum DC(peak)
Peak operating current (sequential write)
Typical DC
Maximum DC
Maximum DC(peak)
10
3.0Gb mode
+5V +12V
±5% ±5%
0.23 0.28
0.23 0.28
0.14 0.25
0.14 0.14
0.13 0.01
0.54 1.46
0.62 1.35
0.62 2.03
0.66 2.49
0.13 0.02
3σ 0.99 1.92
3σ 0.76 2.50
0.14 0.02
3σ
0.29 0.46
3σ 0.30 0.56
3σ 1.12 1.52
0.39 0.36
3σ 0.40 0.41
3σ 1.13 1.55
0.61 0.28
3σ 0.63 0.29
3σ 0.91 0.46
0.79 0.28
3σ 0.82 0.29
3σ 1.09 0.51
Constellation ES.1 Serial ATA Product Manual, Rev. B
6.0Gb mode
+5V +12V
±5% ±5%
0.24 0.28
0.24 0.28
0.15 0.25
0.15 0.14
0.14 0.02
0.60 1.46
0.60 1.31
0.60 2.05
0.84 2.51
0.14 0.01
0.49 1.90
0.78 2.59
0.15 0.02
0.30 0.48
0.31 0.58
1.14 1.55
0.40 0.37
0.41 0.41
1.14 1.56
0.62 0.27
0.63 0.29
0.99 0.55
0.79 0.28
0.81 0.29
1.12 0.57