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Hitachi HTS543212L9SA00 Manual Do Utilizador

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5K320 SATA OEM Specification 
 
27 
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
 
1.7 
Active Idle average 
0.8 
Low Power Idle average  
0.55 
Read average 
4  
 
1.8 
Write average 
1.8 
Seek average 
5
 
2.2 
Standby 
0.2 
Sleep 
0.1 
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 th e 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 a verage of the drive population tested at nominal environmental and 
voltage conditions.