Dc Power Requirements; Input Voltage; Power Supply Current (Typical); Figure 53. Input Voltage - Hitachi ic35l060avv207-0 - Deskstar 60 GB Hard Drive Specifications

6.5 DC power requirements

The following voltage specifications apply at the power connector of the drive. Damage to the drive
electronics may result if the power supply cable is connected or disconnected while power is being
applied to the drive (no hot plug/unplug is allowed). Connections to the drive should be made in a low
voltage, isolated secondary circuit (SELV). There is no special power on/off sequencing required.

6.5.1 Input voltage

Input voltage
+5 Volts Supply
+12 Volts Supply

Figure 53. Input voltage

Note: To avoid damage to the drive electronics, power supply voltage spikes must not exceed specifi-
cations.

6.5.2 Power supply current (typical)

Power supply current of
180-GB model
(values in milliamps. RMS)
Idle average
Idle ripple (peak-to-peak)
Low RPM idle
Low RPM idle ripple
Unload idle average
Unload idle ripple
1
Seek average
Seek peak
Random R/W average
Random R/W peak
Silent R/W average
Silent R/W peak
Start up (max)
Standby average
Sleep average

Figure 54. Power supply current of 180 GB models

Except for a peak of less than 100
1
Random seeks at 40% duty cycle
2
Seek duty = 30%, W/R duty = 45%, Idle Duty = 25%
During run and spin up
5V ± 5%
12V +10% –8%
+5 Volts [mA]
Pop Mean
280
410
130
50
130
50
330
590
2
490
1150
480
1150
830
140
100
µ
s duration
Deskstar 180GXP hard disk drive specifications
Absolute max
spike voltage
–0.3 to 7V
–0.3 to 15V
+12 Volts [mA]
Std Dev Pop Mean
2 470
5 610
6 180
1 350
2 350
2 410
4 690
6 1950
6 660
17 1950
6 530
17 990
21 1860
3 20
9 20
47
1
Total
[W]
Std Dev
18
7.0
24
8
2.9
20
20
4.9
30
11
10.0
19
16
10.3
19
20
8.7
14
37
1 0.9
1 0.7