Constellation ES.1 Serial ATA Product Manual, Rev. B
11
*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and
power to operational levels
.
Table 4:
500GB Drive
DC power requirements
3.0Gb mode
6.0Gb mode
Voltage
+5V
+12V
+5V
+12V
Regulation
±5%
±5%
±5%
±5%
Avg Idle Current *
0.37
0.21
0.38
0.21
Advanced Idle Current *
Idle_A
0.37
0.21
0.38
0.21
Idle_B
0.14
0.19
0.15
0.19
Idle_C
0.14
0.12
0.15
0.12
Standby
0.13
0.01
0.14
0.02
Transition Current *
Idle_A (Active)
0.78
1.48
0.78
1.42
Idle_B (Active)
0.72
1.19
0.72
1.35
Idle_C (Active)
0.72
2.01
0.72
2.03
Standby (Active)
0.72
2.49
0.72
2.43
Average Sleep Current
0.13
0.01
0.14
0.02
Maximum Start Current
DC (peak DC)
3
σ
0.62
1.87
0.62
1.88
AC (Peak DC)
3
σ
0.76
2.56
0.80
2.65
Delayed Motor Start (DC max)
3
σ
0.14
0.02
0.15
0.02
Peak operating current (random read):
Typical DC
0.32
0.40
0.32
0.40
Maximum DC
3
σ
0.32
0.48
0.32
0.47
Maximum DC(peak)
3
σ
1.03
1.48
01.06
1.450
Peak operating current (random write)
Typical DC
0.40
0.30
0.41
0.30
Maximum DC
3
σ
0.41
0.33
0.42
0.33
Maximum DC(peak)
3
σ
1.16
1.44
1.16
1.44
Peak operating current (sequential read)
Typical DC
0.61
0.20
0.62
0.20
Maximum DC
3
σ
0.63
0.22
0.64
0.22
Maximum DC(peak)
3
σ
0.91
0.43
0.97
0.45
Peak operating current (sequential write)
Typical DC
0.79
0.20
0.79
0.20
Maximum DC
3
σ
0.83
0.22
0.84
0.22
Maximum DC(peak)
3
σ
1.15
0.40
1.15
0.44
