Current And Power Dissipation - Fujitsu MPB3021AT Product Manual

Mode of
Operation
Model MPB
3021AT
Spin up
Idle (Ready) 115
(*3)
R/W (On Track)
125
(*4)
Seek (Random)
335
(*5)
Standby
Sleep
*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.
1 - 6
Table 1.3 Current and power dissipation
Typical RMS current (*1) [mA]
+12 V
MPB MPB
3032AT 3052AT
MPB MPB
3043AT 3064AT
1300
1500 peak
140 185
150 200
360 410
4
4
C141-E045-02EN
Typical Power (*2) [watts]
+5 V
All Models MPB
3021AT
460
600 peak
460 3.68
510 4.05
510 6.57
155
110
MPB MPB
3032AT 3052AT
MPB MPB
3043AT 3064AT
17.9
3.98 4.52
4.35 4.95
6.87 7.47
0.82
0.60