Table 4: | 500GB Drive DC power requirements |
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| 1.5Gb mode |
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| 3.0Gb mode |
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Voltage |
| +5V | +12V |
| Power | +5V | +12V |
| Power |
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Regulation | ±5% | ±5% |
| (Watts) | ±5% | ±5% |
| (Watts) | |
Avg Idle Current * | 0.26 | 0.20 |
| 3.71 | 0.28 | 0.20 |
| 3.74 | |
Advanced Idle Current * |
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| Idle_A | 0.13 | 0.21 |
| 3.13 | 0.14 | 0.21 |
| 3.17 |
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| Idle_B | 0.13 | 0.18 |
| 2.82 | 0.14 | 0.18 |
| 2.85 |
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| Idle_C | 0.13 | 0.07 |
| 1.50 | 0.14 | 0.07 |
| 1.52 |
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| Standby | 0.09 | 0.01 |
| 0.53 | 0.09 | 0.01 |
| 0.55 |
Transition | Current * |
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| Idle_A (Active) | 0.84 | 0.52 |
| 10.44 | 0.84 | 0.54 |
| 10.68 |
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| Idle_B (Active) | 0.70 | 1.11 |
| 16.81 | 0.80 | 1.13 |
| 17.56 |
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| Idle_C (Active) | 0.70 | 2.45 |
| 32.91 | 0.72 | 2.43 |
| 32.77 |
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| Standby (Active) | 0.80 | 2.59 |
| 35.08 | 0.84 | 2.59 |
| 35.28 |
Average | Sleep Current | 0.09 | 0.01 |
| 0.54 | 0.09 | 0.01 |
| 0.56 |
Maximum Start Current |
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| DC (peak DC) | 0.36 | 2.03 |
| 26.14 | 0.36 | 2.03 |
| 26.14 |
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| AC (Peak DC) | 0.55 | 2.59 |
| 33.83 | 0.63 | 2.59 |
| 34.24 |
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Delayed Motor Start (DC max) | 0.09 | 0.01 |
| 0.55 | 0.09 | 0.01 |
| 0.59 | |
Peak operating current (random read): |
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| Typical DC | 0.29 | 0.42 |
| 6.45 | 0.29 | 0.42 |
| 6.47 |
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| Maximum DC | 0.30 | 0.42 |
| 6.56 | 0.30 | 0.42 |
| 6.54 |
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| Maximum DC(peak) | 1.00 | 1.38 |
| 27.56 | 1.00 | 1.38 |
| 21.32 |
Peak | operating current (random write) |
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| Typical DC | 0.31 | 0.32 |
| 5.32 | 0.31 | 0.31 |
| 5.31 |
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| Maximum DC | 0.31 | 0.33 |
| 5.48 | 0.31 | 0.32 |
| 5.45 |
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| Maximum DC(peak) | 1.20 | 1.40 |
| 22.80 | 1.20 | 1.38 |
| 22.56 |
Peak | operating current (sequential read) |
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| Typical DC | 0.62 | 0.21 |
| 5.63 | 0.62 | 0.21 |
| 5.62 |
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| Maximum DC | 0.63 | 0.21 |
| 5.72 | 0.63 | 0.21 |
| 5.72 |
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| Maximum DC(peak) | 1.02 | 0.46 |
| 10.62 | 1.02 | 0.46 |
| 10.62 |
Peak | operating current (sequential write) |
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| Typical DC | 0.66 | 0.21 |
| 5.84 | 0.66 | 0.21 |
| 5.82 |
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| Maximum DC | 0.67 | 0.21 |
| 5.92 | 0.67 | 0.21 |
| 5.89 |
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| Maximum DC(peak) | 1.34 | 0.46 |
| 12.22 | 1.30 | 0.48 |
| 12.26 |
*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.
Constellation ES Serial ATA Product Manual, Rev. G | 11 |
