Fujitsu MHV2040AH - Mobile - Hard Drive, Product Manual

Page: 31 / 280

1.3 Power Requirements
C141-E217 1-7
(4) Current Requirements and Power Dissipation
Table 1.3 lists the current and power dissipation (typical).
Table 1.3 Current and power dissipation
Typical RMS Current Typical Power (*3)
Spin up (*1)
1.0 A 5.0 W
Idle
120 mA 0.60 W
R/W (on track) (*2)
380mA 1.9 W
Seek (*5)
420 mA 2.1 W
Standby
40 mA 0.20 W
Sleep
20 mA 0.1 W
Energy
Efficiency (*4)
—
0.006 W/GB (rank E / MHV2100AH)
0.008 W/GB (rank E / MHV2080AH)
0.010 W/GB (rank E / MHV2060AH)
0.015 W/GB (rank D / MHV2040AH)
*1 Maximum current at starting spindle motor.
*2 Current and power level when the operation (command) that accompanies a
transfer of 63 sectors is executed 3 times in 100 ms
*3 Power requirements reflect typical values for +5 V power.
*4 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)
*5 The seek average current is specified based on three operations per 100
msec.