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Seagate CONSTELLATION ES SERIAL ATA ST31000524NS User Manual

Page 15

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Constellation ES Serial ATA Product Manual, Rev. F

9

Table 2:

2000GB Drive

DC power requirements

1.5Gb mode

3.0Gb mode

Voltage

+5V

+12V

Power

+5V

+12V

Power

Regulation

±5%

±5%

(Watts)

±5%

±5%

(Watts)

Avg Idle Current *

0.26

0.42

6.38

0.27

0.42

6.39

Advanced Idle Current *

Idle_A

0.13

0.35

4.83

0.14

0.42

5.70

Idle_B

0.13

0.36

5.01

0.14

0.36

5.00

Idle_C

0.13

0.22

3.26

0.14

0.22

3.27

Standby

0.09

0.01

0.51

0.09

0.01

0.53

Transition Current *

Idle_A (Active)

0.86

1.66

24.22

0.98

0.90

15.70

Idle_B (Active)

0.76

1.72

24.47

0.74

1.64

23.42

Idle_C (Active)

0.78

2.48

33.71

0.78

2.50

33.95

Standby (Active)

0.80

2.64

35.71

0.82

2.64

35.83

Average Sleep Current

0.09

0.01

0.52

0.09

0.01

0.55

Maximum Start Current

DC (peak DC)

0.35

2.03

26.13

0.36

2.03

26.24

AC (Peak DC)

0.59

2.66

34.91

0.61

2.64

34.77

Delayed Motor Start (DC max)

0.09

0.01

0.55

0.09

0.01

0.57

Peak operating current (random read):

Typical DC

0.30

0.63

9.02

0.30

0.63

9.03

Maximum DC

0.30

0.64

9.21

0.31

0.64

9.22

Maximum DC(peak)

1.04

1.88

27.78

1.06

1.88

27.86

Peak operating current (random write)

Typical DC

0.30

0.52

7.78

0.31

0.52

7.80

Maximum DC

0.31

0.53

7.90

0.31

0.53

7.95

Maximum DC(peak)

1.40

1.86

29.32

1.44

1.84

29.28

Peak operating current (sequential read)

Typical DC

0.65

0.44

8.56

0.65

0.44

8.54

Maximum DC

0.67

0.45

8.78

0.67

0.44

8.67

Maximum DC(peak)

1.12

0.88

16.16

1.08

0.88

15.96

Peak operating current (sequential write)

Typical DC

0.64

0.44

8.52

0.65

0.44

8.52

Maximum DC

0.66

0.45

8.66

0.66

0.44

8.65

Maximum DC(peak)

1.44

0.90

18.00

1.44

0.88

17.76

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