Seagate ST1.2 ST1.2 Series Product Manual - Page 14

Typical current profile, Table 2, DC power

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Table 2: DC power ST1 Power Consumption (W) Max current the average of the peak value in 10ms window Current Spinup Load/Unload current Write Read Seek Performance idle Low power idle Standby/Sleep Average 3.3V (mA) 330 330 226 200 90 30 Max 3.3V (mA) 350 300 300 350 350 300 Average 5.0V (mA) 330 340 226 205 92 33 Max 5.0V (mA) 350 300 300 350 350 300 *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. 2.7.1.1 Typical current profile Figure 5. Typical 3.3V startup and operation current profile 8 ST1.2 Series Product Manual, Rev. B

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8
ST1.2 Series Product Manual, Rev. B
*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
.
2.7.1.1
Typical current profile
Figure 5.
Typical 3.3V startup and operation current profile
Table 2:
DC power
ST1 Power Consumption (W)
Max current the average of the
peak value in 10ms window
Average
3.3V
(mA)
Max
3.3V
(mA)
Average
5.0V
(mA)
Max
5.0V
(mA)
Current
350
350
Spinup
300
300
Load/Unload current
300
300
Write
330
350
330
350
Read
330
350
340
350
Seek
226
300
226
300
Performance idle
200
205
Low power idle
90
92
Standby/Sleep
30
33