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

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.
Item
Nominal Supply
Supply Voltage
Power Supply Ripple (0–20 MHz)
Tolerance
Supply rise time
Supply Current (+5.00 V dc case)
Description
Performance Idle average
Active Idle average
Low Power Idle average
Read average
Write average
Seek average
Standby
Sleep
Startup (maximum peak)
Average from power on to
ready
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

48-GB model
(Watts typical)
2.0
1.3
0.9
2.5
2.7
2.6
0.25
0.1
5.0
3.8
Travelstar 48GH, 30GN & 15GN hard disk drive specifications
Requirements
+5 Volt dc
–0.3 Volt to 6.0 Volt
100 mV p-p max
±5%
7–100 ms
Population Mean
(nominal condition)
30-GB & 20-GB
models
(Watts typical)
1.85
0.95
0.65
2.1
2.2
2.3
0.25
0.1
4.7
3.3
27
Notes
*1
*2
All other models
Notes
(Watts typical)
1.85
0.85
0.65
2.0
2.1
2.3
0.25
0.1
4.7
3.3
*3
*4
*5
*6