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Constellation.2 Serial ATA Product Manual, Rev. B 11
500GB drive (Standard & SED model) DC power requirements
*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.
Parameter
Voltage +5 V +12 V Power +5 V +12 V Power
Regulation (watts) (watts)
AverageIdleCurre nt 0.26 0.11 2.65 0.26 0.11 2.67
AdvancedIdleCurrent
Idle1 0.21 0.11 2.4 2 0.22 0.11 2 .47
Idle2 0.15 0.09 1.8 7 0.16 0.09 1 .92
Idle3 0.15 0.07 1.6 1 0.16 0.07 1 .66
Standb
y
0.13 0.04 1.15 0.14 0.04 1.21
AverageSleepCurrent 0.13 0.04 1.1 6 0.14 0.04 1.20
MaximumStartCurrent:
DC(PeakDC) 0.48 0.7 9 11.85 0.48 0.79 11.86
AC(PeakAC) 0 .66 1.3 0 18.97 0.71 1.30 19.15
DelayedMot orStart(DCmax) 0.14 0.04 1.21 0.14 0.04 1.24
PeakOperatingCur rent(randomread):
Typ icalDC 0.28 0.26 4.48 0.29 0.26 4.51
MaximumDC 0.29 0.26 4.59 0.30 0.26 4.59
MaximumDC(peak) 0.980.8615.221.000.8615.32
PeakOperatingCur rent(randomwrite):
Typ icalDC 0.37 0.21 4.39 0.38 0.21 4.43
MaximumDC 0.38 0.22 4.54 0.38 0.22 4.55
MaximumDC(peak) 0.900.8414.580.920.8614.92
Peakoperatingcurrent(sequentialread ):
Typ icalDC 0.58 0.13 4.39 0.59 0.13 4.45
MaximumDC 0.60 0.13 4.52 0.62 0.13 4.63
MaximumDC(peak) 0.90 0.28 7.86 0.80 0.30 7.60
Peakoperatingcurrent(sequentialwrite) :
Typ icalDC 0.72 0.13 5.09 0.72 0.12 5.11
MaximumDC 0.76 0.13 5.32 0.77 0.13 5.38
MaximumDC(peak) 0.96 0.28 8.16 0.96 0.26 7.92
ST9500620NS ST9500620NS
(3.0GB) (6.0GB)
+10/-7.5% +10/-7.5%