Dc Power Requirements - IBM DTNA-22160 - Travelstar 2.1 GB Hard Drive Specifications

5.2 DC Power Requirements

Connection to the product should be made in isolated secondary circuits (SELV). The voltage specifications
are applied at the power connector of the drive.
Item
Nominal Supply
Power Supply Ripple ( 0- 20Mhz)
Tolerance
Supply Current
Idle average (Low-power idle)
Idle average (Performance idle)
Read / Write
Seek average
Standby
Sleep
Start up(maximum peak)
(average from power on to ready)
Supply Rise Time
Figure 15. Power Requirement
Notes (*):
(*1) The maximum fixed disk ripple is measured at 5V input of the drive.
(*2) The disk drive shall not incur damage for an over voltage condition of + 2 5 % (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 msec.
(*5) The seek average current is specified based on three operations per 100 msec.
(*6) The typical current wave form at start up is shown in Figure 16 on page 22.
Requirements
+ 5 Volt
100 mv p-p max
+ / - 5 %
Pop.Mean
(Nominal Condition)
0.17 A RMS max (0.85 W)
0.37 A RMS max (1.85 W)
0.46 A RMS max (2.3W)
0.46 A RMS max (2.3W)
0.06 A RMS max (0.3W)
0.02 A RMS max (0.1W)
0.94 A RMS max (4.7 W)
0.70 A RMS max (3.5 W)
7 - 100 ms
Notes
*1
*2
*3
*4
*5
*6
*6
21
Specification