Fujitsu DISK DRIVES MHL2300AT, Product Manual

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Device Overview
1-6 C141-E104-03EN
(3) Current Requirements and Power Dissipation
Table 1.3 lists the current and power dissipation.
Table 1.3 Current and power dissipation
Typical RMS Current Typical Power (*3)
MHL Series MHM Series MHL Series MHM Series
Spin up (*1) 0.9 A 0.9 A 4.5 W 4.5 W
Idle 190 mA 160 mA 0.95 W 0.8 W
R/W (on track) (*2) 520 mA 500 mA 2.6 W 2.5 W
Seek (*5) 490 mA 460 mA 2.45 W 2.3 W
Standby 50 mA 50 mA 0.25 W 0.25 W
Sleep 20 mA 20 mA 0.1 W 0.1 W
Energy
Efficiency (*4) — — 0.032 W/GB
(rank E)
0.040 W/GB
(rank E / MHM2200AT)
0.040 W/GB
(rank E / MHM2150AT)
0.080 W/GB
(rank D / MHM2100AT)
*1 Current at starting spindle motor.
*2 At 30% disk accessing.
*3 Power requirements reflect nominal values for +5V 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.
(4) Current fluctuation (Typ.) at +5V when power is turned on