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