Dc Power Requirements; Table 13. Dc Power Requirements; Table 14. Power Consumption Efficiency - Hitachi HTS541616J9AT00 - Travelstar 160 GB Hard Drive Specifications

2.5 inch ata/ide hard disk drive
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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)
2
Tolerance
Supply rise time
Operational Mode
Performance Idle average
Active Idle average
Low Power Idle average
4
Read average
Write average
5
Seek average
Standby
Sleep
Startup (maximum peak)
Average from power on to ready
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.

Table 13. DC Power requirements

6.2.1
Power consumption efficiency
Capacity
Power Consumption Efficiency
(Watts/GB)

Table 14. Power consumption efficiency

Note:
Power consumption efficiency is calculated as Power Consumption of Low Power Idle Watt/
Capacity (GB).
Travelstar 5K160 (PATA) Hard Disk Drive Specification
Requirements
+5 Volt dc
–0.3 Volt to 6.0 Volt
1
100 mV p-p max.
±5%
1–100 ms
Watts (RMS Typical)
3
2.0
0.8
0.6
1.8
1.8
2.0
0.2
0.1
6
5.0
3.0
160GB
120GB
0.0038
0.0050
7
80GB
60GB
0.0075
0.0100
26 / 188
40 GB
0.0150

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