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Current Requirements and Power Dissipation
Table 1.3 lists the current and power dissipation.
Mode of Operation
Model
MPD3091AH
Spin up
2100
2300 peak
Idle (Ready) (*3)
270
R/W (On Track) (*4)
340
Seek (Random) (*5)
580
Standby
6.5
Sleep
6.5
*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
MPD3137AH
MPD3182AH
2100
2100
2300 peak
2300 peak
330
390
400
460
640
700
6.5
6.5
6.5
6.5
C141-E072-01EN
Typical Power (*2) [watts]
+5 V
All Models
MPD3091AH
MPD3137AH
630
28.4
700 peak
305
4.8
585
7.0
570
9.8
157
0.9
152
0.8
MPD3182AH
28.4
28.4
5.5
6.2
7.7
8.4
10.5
11.3
0.9
0.9
0.8
0.8
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