Hitachi HTS541680J9SA00 Specifications - Page 27

DC power requirements

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Travelstar 5K160 (SATA) Hard Disk Drive Specification 6.2 DC power requirements Connection to the product should be made in a safety extra low voltage (SELV) circuits. The voltage specifications are applied at the power connector of the drive. Item Nominal supply Supply voltage Power supply ripple (0-20 MHz)1 Tolerance 2 Supply rise time Requirements +5 Volt dc -0.3 Volt to 6.0 Volt 100 mV p-p max. ±5% 1-100 ms Watts (RMS Typical) 7 Performance Idle average 3 Active Idle average Low Power Idle average Read average 4 Write average Seek average 5 Standby Sleep Startup (maximum peak) 6 Average from power on to ready Table 14. DC Power requirements 2.0 0.85 0.65 1.8 1.8 2.2 0.25 0.2 5.0 3.8 Footnotes: 1. 2. 3. 4. 5. 6. 7. The maximum fixed disk ripple is measured at the 5 volt input of the drive. The disk drive shall not incur damage for an over voltage condition of +25% (maximum duration of 20 ms) on the 5 volt nominal supply. The idle current is specified at an inner track. The read/write current is specified based on three operations of 63 sector read/write per 100 ms. The seek average current is specified based on three operations per 100 ms. The worst case operating current includes motor surge. "Typical" mean average of the drive population tested at nominal environmental and voltage conditions. 27/167

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Travelstar 5K160 (SATA) Hard Disk Drive Specification
27/167
6.2
DC power requirements
Connection to the product should be made in a safety extra low voltage (SELV) circuits. The voltage
specifications are applied at the power connector of the drive.
Item
Requirements
Nominal supply
+5 Volt dc
Supply voltage
–0.3 Volt
to 6.0 Volt
Power supply ripple (0–20
MHz)
1
100 mV p-p max.
Tolerance
2
±5%
Supply rise time
1–100 ms
Watts (RMS Typical)
7
Performance Idle average
3
2.0
Active Idle average
0.85
Low Power Idle average
0.65
Read average
4
1.8
Write average
1.8
Seek average
5
2.2
Standby
0.25
Sleep
0.2
Startup (maximum peak)
6
5.0
Average from power on to
ready
3.8
Table 14. DC Power requirements
Footnotes:
1.
The maximum fixed disk ripple is measured at the 5 volt input of the drive.
2.
The disk drive shall not incur damage for an over voltage condition of +25% (maximum
duration of 20
ms) on the 5 volt nominal supply.
3.
The idle current is specified at an inner track.
4.
The read/write current is specified based on three operations of 63 sector read/write per
100 ms.
5.
The seek average current is specified based on three operations per 100 ms.
6.
The worst case operating current includes motor surge.
7.
“Typical” mean average of the drive population tested at nominal environmental and
voltage conditions.