Product manual

Barracuda ATA Family Product Manual, Rev. B 9
1.7.1.1 Typical current profile
Figure 1. Typical startup and operation current profile
Models ST328040A and ST327270A Typical Amps RMS
Power Mode
Typical Watts RMS
5V 12V
Spinup — — 2.2 (peak)
Seeking (Random,
no read/write) 11.9 0.340 0.850
Operating (read/write) 8.5 0.485 0.505
Idle 7.5 0.310 0.496
Standby 1.2 0.194 0.019
Sleep 1.0 0.128 0.030
Models ST320430A, ST313620A,
ST310220A and ST36810A
Typical Amps RMS
Power Mode Typical Watts RMS 5V 12V
Spinup — — 2.2 (peak)
Seeking (Random,
no read/write) 11.9 0.340 0.850
Operating (read/write) 7.5 0.485 0.422
Idle 6.8 0.310 0.440
Standby 1.2 0.194 0.019
Sleep 1.0 0.128 0.030
Time (seconds)
Current (mA)
012345678910
2.5
2.0
1.5
1.0
0.5
0