Seagate SAVVIO 10K.5 FC ST9300605FC Product Manual page 32

Table 5: DC power requirements for ST9300605FC model
Voltage
Regulation
Avg idle current DC
Advanced Idle Current
Idle_A
Idle_B
Idle_C
Standby
Maximum starting current
(peak DC) DC
(peak AC) AC
Delayed motor start (max) DC
Peak operating current (random read):
Typical DC
Maximum DC
Maximum (peak) DC
Peak operating current (random write)
Typical DC
Maximum DC
Maximum (peak) DC
Peak operating current (sequential read)
Typical DC
Maximum DC
Maximum (peak) DC
Peak operating current (sequential write)
Typical DC
Maximum DC
Maximum (peak) DC
[1] Measured with average reading DC ammeter. Instantaneous +12V current peaks will exceed these values. Power
supply at nominal voltage. N (number of drives tested) = 6, 35 Degrees C ambient.
[2] For +12 V, a –10% tolerance is allowed during initial spindle start but must return to ±5% before reaching 9,936 RPM.
The ±5% must be maintained after the drive signifies that its power-up sequence has been completed and that the
drive is able to accept selection by the host initiator.
[3] See +12V current profile in Figure 5.
[4] See +12V current profile in Figure 6.
[5] This condition occurs when the Motor Start option is enabled and the drive has not yet received a Start Motor com-
mand.
[6] See paragraph 7.3.1, "Conducted noise immunity." Specified voltage tolerance includes ripple, noise, and transient
response.
[7] Operating condition is defined as random 8 block reads.
[8] During idle, the drive heads are relocated every 30 seconds to a random location within the band from three-quarters
to maximum track
26
2Gb
Notes (Amps)
+5V
[6] ±5%
[1] [8] 0.36
3σ 0.38
3σ 0.26
3σ 0.26
3σ 0.26
3σ [4] 0.61
3σ [4] 0.95
3σ [1] [5] 0.57
[1] [7] 0.45
3σ [1] 0.47
3σ 1.23
0.51
3σ 0.53
3σ 1.06
0.81
3σ 0.86
3σ 1.12
0.89
3σ 0.94
3σ 1.20
Savvio 10K.5 FC Product Manual, Rev. D
4Gb
(Amps) (Amps) (Amps)
+12V [2] +5V +12V [2]
±5% [2] ±5% ±5% [2]
0.15 0.38 0.15
0.16 0.39 0.16
0.15 0.27 0.15
0.09 0.27 0.09
0.06 0.27 0.06
0.89 0.63 0.89
1.54 0.99 1.52
0.06 0.58 0.06
0.35 0.47 0.35
0.37 0.49 0.37
1.48 1.16 1.46
0.33 0.52 0.33
0.36 0.54 0.36
1.48 1.06 1.51
0.14 0.83 0.14
0.15 0.87 0.14
0.32 1.15 0.32
0.14 0.91 0.14
0.15 0.95 0.14
0.32 1.19 0.30