IBM IC25N020ATDA04 - Travelstar 20 GB Hard Drive - DC Power Requirements; Figure 23. DC Power Requirements

6.2 DC power requirements
Connection to the product should be made in isolated secondary circuits (SELV). The voltage specifica-
tions are applied at the power connector of the drive.
Population Mean
(nominal condition)
Supply Current (+5.00 V dc case)
7–100 msSupply rise time
*2±5%Tolerance
*1100 mV p-p maxPower Supply Ripple (0–20 MHz)
–0.3 Volt to 6.0 VoltSupply Voltage
+5 Volt dcNominal Supply
NotesRequirementsItem
3.3 3.33.8
Average from power on to
ready
*64.7 4.75.0Startup (maximum peak)
0.1 0.10.1Sleep
0.25 0.250.25Standby
*52.3 2.32.6Seek average
2.1 2.22.7Write average
*42.0 2.12.5Read average
0.65 0.650.9Low Power Idle average
0.85 0.951.3Active Idle average
*31.85 1.852.0Performance Idle average
Notes
All other models
(Watts typical)
30-GB & 20-GB
models
(Watts typical)
48-GB model
(Watts typical)
Description
Notes:
*1. The maximum fixed disk ripple is measured at the 5 volt input of the HDD.
*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.
Figure 23. DC Power requirements
Travelstar 48GH, 30GN & 15GN hard disk drive specifications
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