Seagate ST33000651SS Constellation ES SATA Product Manual - Page 17

Table 4, DC power requirements

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Table 4: 500GB Drive DC power requirements 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) +5V ±5% 0.26 0.13 0.13 0.13 0.09 0.84 0.70 0.70 0.80 0.09 0.36 0.55 0.09 0.29 0.30 1.00 0.31 0.31 1.20 0.62 0.63 1.02 0.66 0.67 1.34 1.5Gb mode +12V Power ±5% (Watts) 0.20 3.71 +5V ±5% 0.28 0.21 3.13 0.14 0.18 2.82 0.14 0.07 1.50 0.14 0.01 0.53 0.09 0.52 10.44 0.84 1.11 16.81 0.80 2.45 32.91 0.72 2.59 35.08 0.84 0.01 0.54 0.09 2.03 26.14 0.36 2.59 33.83 0.63 0.01 0.55 0.09 0.42 6.45 0.29 0.42 6.56 0.30 1.38 27.56 1.00 0.32 5.32 0.31 0.33 5.48 0.31 1.40 22.80 1.20 0.21 5.63 0.62 0.21 5.72 0.63 0.46 10.62 1.02 0.21 5.84 0.66 0.21 5.92 0.67 0.46 12.22 1.30 3.0Gb mode +12V Power ±5% (Watts) 0.20 3.74 0.21 3.17 0.18 2.85 0.07 1.52 0.01 0.55 0.54 10.68 1.13 17.56 2.43 32.77 2.59 35.28 0.01 0.56 2.03 26.14 2.59 34.24 0.01 0.59 0.42 6.47 0.42 6.54 1.38 21.32 0.31 5.31 0.32 5.45 1.38 22.56 0.21 5.62 0.21 5.72 0.46 10.62 0.21 5.82 0.21 5.89 0.48 12.26 *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. Constellation ES Serial ATA Product Manual, Rev. G 11

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Constellation ES Serial ATA Product Manual, Rev. G
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
1.5Gb mode
3.0Gb mode
Voltage
+5V
+12V
Power
+5V
+12V
Power
Regulation
±5%
±5%
(Watts)
±5%
±5%
(Watts)
Avg Idle Current *
0.26
0.20
3.71
0.28
0.20
3.74
Advanced Idle Current *
Idle_A
0.13
0.21
3.13
0.14
0.21
3.17
Idle_B
0.13
0.18
2.82
0.14
0.18
2.85
Idle_C
0.13
0.07
1.50
0.14
0.07
1.52
Standby
0.09
0.01
0.53
0.09
0.01
0.55
Transition Current *
Idle_A (Active)
0.84
0.52
10.44
0.84
0.54
10.68
Idle_B (Active)
0.70
1.11
16.81
0.80
1.13
17.56
Idle_C (Active)
0.70
2.45
32.91
0.72
2.43
32.77
Standby (Active)
0.80
2.59
35.08
0.84
2.59
35.28
Average Sleep Current
0.09
0.01
0.54
0.09
0.01
0.56
Maximum Start Current
DC (peak DC)
0.36
2.03
26.14
0.36
2.03
26.14
AC (Peak DC)
0.55
2.59
33.83
0.63
2.59
34.24
Delayed Motor Start (DC max)
0.09
0.01
0.55
0.09
0.01
0.59
Peak operating current (random read):
Typical DC
0.29
0.42
6.45
0.29
0.42
6.47
Maximum DC
0.30
0.42
6.56
0.30
0.42
6.54
Maximum DC(peak)
1.00
1.38
27.56
1.00
1.38
21.32
Peak operating current (random write)
Typical DC
0.31
0.32
5.32
0.31
0.31
5.31
Maximum DC
0.31
0.33
5.48
0.31
0.32
5.45
Maximum DC(peak)
1.20
1.40
22.80
1.20
1.38
22.56
Peak operating current (sequential read)
Typical DC
0.62
0.21
5.63
0.62
0.21
5.62
Maximum DC
0.63
0.21
5.72
0.63
0.21
5.72
Maximum DC(peak)
1.02
0.46
10.62
1.02
0.46
10.62
Peak operating current (sequential write)
Typical DC
0.66
0.21
5.84
0.66
0.21
5.82
Maximum DC
0.67
0.21
5.92
0.67
0.21
5.89
Maximum DC(peak)
1.34
0.46
12.22
1.30
0.48
12.26