Fujitsu MPD3XXXAT Computer Drive User Manual


 
C141-E069-02EN1 - 6
(3) Current Requirements and Power Dissipation
Table 1.3 lists the current and power dissipation.
Table 1.3 Current and power dissipation
Typical RMS current (*1) [mA]
+12 V +5 V
Model MPD3043
AT
MPD3064/
MPD3084
AT
MPD3108/
MPD3130
AT
MPD3173
AT
All Models MPD3043
AT
MPD3064/
MPD3084
AT
MPD3108/
MPD3130
AT
MPD3173
AT
Spin up 1500
1900 peak
1500
1900 peak
1600
1900 peak
1600
1900 peak
560
600 peak
20.8 20.8 22.0 22.0
Idle (Ready) (*3) 130 177 205 230 280 3.0 3.5 3.8 4.2
R/W (On Track) (*4) 168 213 240 267 560 4.8 5.4 5.7 6.0
Seek (Random) (*5) 325 350 377 404 544 6.6 6.9 7.2 7.6
Standby 6.5 6.5 6.5 6.5 157 0.9 0.9 0.9 0.9
Sleep 6.5 6.5 6.5 6.5 152 0.8 0.8 0.8 0.8
*1 Current is typical rms except for spin up.
*2 Power requirements reflect nominal values for +12V and +5V power.
*3 Idle mode is in effect when the drive is not reading, writing, seeking, or executing any commands. A portion of the R/W circuitry is powered
down, the spindle motor is up to speed and the Drive ready condition exists.
*4 R/W mode is defined as 50% read operations and 50% write operations on a single physical track.
*5 Seek mode is defined as continuous random seek operations with minimum controller delay.
Typical Power (*2) [watts]
Mode of Operation