Figure 1. Typical Startup And Operation Current Profile - Seagate ST320410ACE Product Manual

U Series CE Family Product Manual, Rev. A
Power Mode
Spinup
Seek (Random,
no read/write)
Performance mode
Operating (read/write)
Performance mode
Idle
Standby
Sleep
1.7.1.1 Typical current profile
Current (amps)
2.0
1.5
1.0
0.5
0
-0.5
-1.0
-1.5
-2.0
1
2

Figure 1. Typical startup and operation current profile

Typical Amps Means
Typical Watts
—
7.5
7.5
5.0
1.2
0.9
3 4 5
6
Time (seconds)
5V 12V
0.75 2.5
0.83 0.279
0.94 0.233
0.63 0.154
0.2 0.017
0.15 0.0125
7
9