Figure 1. Typical Startup And Operation Current Profile - Seagate ST340016A Product Manual

Barracuda ATA IV Family Product Manual, Rev. B
•
Standby mode
During Standby mode, the drive accepts commands, but the drive is
not spinning, and the servo and read/write electronics are in power-
down mode.
Power dissipation
(watts, ST380021A, 2-disc)
Spinup
Idle
Idle* (with offline activity)
Operating 40% r/w.
40% seek, 20% inop.
Seeking
Standby
Sleep
*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 .
1.7.1.1 Typical current profile
Current (amps)
2.5
2
1.5
1
0.5
0
-0.5

Figure 1. Typical startup and operation current profile

5V typ
Average
amps
(watts, 25° C)
—
8.0 0.837
9.8 1.02
12.5 0.76
13.0 0.575
1.15 0.202
0.9 0.151
T ime (seconds)
9
12V typ
amps
1.2 2.8 (peak)
0.317
0.389
0.725
0.844
0.012
0.012