Current And Power Dissipation - Fujitsu MPG3XXXAH Product Manual

(3) Current Requirements and Power Dissipation
Table 1.3 lists the current and power dissipation.
Mode of Operation
Model MPG
3102AH
Spin up 1950 peak
Idle (Ready) (*3)
R/W (On Track) (*4)
Seek (Random) (*5)
Standby
Sleep
Energy efficiency (rank) (*6)
*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/W/R mode is defined as 33% seek operations, 33% write operations, and 33% read operations.
*6 Energy efficiency based on the Law concerning the Rational Use of Energy indicates the value obtained by dividing power consumption by the
storage capacity. (Japan only)
1 - 6
Table 1.3

Current and power dissipation

Typical RMS current (*1) [mA]
+12 V
MPG MPG
3153AH 3204AH
1950 peak 1950 peak
300 330 330
300 380 380
430 490 490
18 18 18
18 18 18
[watt / GB]
C141-E112-01EN
Typical Power (*2) [watts]
+5 V
All MPG
Models 3102AH 3153AH
800 peak 27.4
490 6.1
530 6.3
550 7.9
120 0.8
120 0.8
0.596 (A) 0.312 (B)
MPG MPG
3204AH
27.4 27.4
6.4 6.4
7.2 7.2
8.6 8.6
0.8 0.8
0.8 0.8
0.312 (B)