Seagate SAVVIO ST9300405SS Product Manual page 33

Table 5:
300GB standard model
Voltage
Regulation
Avg idle current DC
Advanced Idle Current
Idle_A
Idle_B
Idle_C
Standby
Transition 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 1 (for 900GB models) and Figure 2 (for 600GB models).
[4] See +12V current profile in Figure 3 (for 450GB models) and Figure 4 (for 300GB models).
Savvio 10K.5 SAS Product Manual, Rev. D
DC power requirements
3.0Gb mode
Notes (Amps)
+5V
[6] ±5%
[1] [8] 0.34
3σ 0.37
3σ 0.25
3σ 0.25
3σ 0.25
3σ 0.99
3σ 0.84
3σ 0.85
3σ 1.06
3σ [4] 0.59
3σ [4] 0.96
3σ [1] [5] 0.45
[1] [7] 0.46
3σ [1] 0.49
3σ 1.25
0.54
3σ 0.56
3σ 1.13
0.80
3σ 0.90
3σ 1.13
0.87
3σ 0.98
3σ 1.26
6.0Gb mode
(Amps) (Amps)
+12V [2] +5V
±5% [2] ±5%
0.15 0.35
0.16 0.38
0.14 0.26
0.08 0.26
0.06 0.26
1.52 1.02
1.52 0.92
1.46 0.84
1.54 0.92
0.85 0.58
1.52 0.93
0.06 0.46
0.43 0.46
0.45 0.50
1.47 1.27
0.34 0.55
0.39 0.57
1.49 1.13
0.17 0.80
0.18 0.90
0.34 1.20
0.16 0.87
0.18 0.99
0.32 1.30
(Amps)
+12V [2]
±5% [2]
0.15
0.16
0.14
0.08
0.06
1.55
1.51
1.53
1.50
0.85
1.48
0.06
0.43
0.46
1.51
0.34
0.39
1.49
0.16
0.18
0.33
0.16
0.18
0.30
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