FUJITSU MPD3XXXAH User Manual
Page 21
C141-E072-01EN
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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
MPD3091AH
MPD3137AH
MPD3182AH
All Models
MPD3091AH
MPD3137AH
MPD3182AH
Spin up
2100
2300 peak
2100
2300 peak
2100
2300 peak
630
700 peak
28.4
28.4
28.4
Idle (Ready) (*3)
270
330
390
305
4.8
5.5
6.2
R/W (On Track) (*4)
340
400
460
585
7.0
7.7
8.4
Seek (Random) (*5)
580
640
700
570
9.8
10.5
11.3
Standby
6.5
6.5
6.5
157
0.9
0.9
0.9
Sleep
6.5
6.5
6.5
152
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