Seagate ST800FM0012 Pulsar Serial ATA Product Manual - Page 17

Peak Operating Current random write

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Table 4: 50GB DC power requirements Parameter 50Gb (3.0GB) Regulation +/‐5% Voltage +5 V Current (A) Power (W) Average Idle Current DCx 0.13 0.65 Standby DCx 0.11 0.55 Average Sleep Current DCx 0.09 0.45 Maximum Start Current: DC (Peak DC) AC (Peak AC) 3σ 0.83 3σ 1.59 Delayed Motor Start (DC max) 3σ 0.11 0.55 Peak Operating Current (random read): Typical DC DCx 0.16 0.80 Maximum DC Maximum DC (peak) 3σ 0.18 0.90 3σ 0.67 Peak Operating Current (random write): Typical DC Maximum DC Maximum DC (peak) DCx 0.25 1.25 3σ 0.28 1.40 3σ 0.98 Peak operating current (sequential read): Typical DC DCx 0.23 1.15 Maximum DC 3σ 0.25 1.25 Maximum DC (peak) 3σ 0.74 Peak operating current (sequential write): Typical DC DCx 0.37 1.85 Maximum DC 3σ 0.40 2.00 Maximum DC (peak) 3σ 0.90 *During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase power to operational levels. Pulsar Product Manual, Rev. A 11

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Pulsar Product Manual, Rev. A
11
Table 4:
50GB DC power requirements
Parameter
Regulation
+/
‐
5%
Voltage
+5 V
Current (A)
Power (W)
Average Idle Current
DCx
0.13
0.65
Standby
DCx
0.11
0.55
Average Sleep Current
DCx
0.09
0.45
Maximum Start Current:
DC (Peak DC)
3
σ
0.83
AC (Peak AC)
3
σ
1.59
Delayed Motor Start (DC max)
3
σ
0.11
0.55
Peak Operating Current (random read):
Typical DC
DCx
0.16
0.80
Maximum DC
3
σ
0.18
0.90
Maximum DC (peak)
3
σ
0.67
Peak Operating Current (random write):
Typical DC
DCx
0.25
1.25
Maximum DC
3
σ
0.28
1.40
Maximum DC (peak)
3
σ
0.98
Peak operating current (sequential read):
Typical DC
DCx
0.23
1.15
Maximum DC
3
σ
0.25
1.25
Maximum DC (peak)
3
σ
0.74
Peak operating current (sequential write):
Typical DC
DCx
0.37
1.85
Maximum DC
3
σ
0.40
2.00
Maximum DC (peak)
3
σ
0.90
50Gb (3.0GB)
*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase power to oper-
ational levels
.