FUJITSU MHA2032AT User Manual
Page 20
Device Overview
1-6
C141-E042-01EN
(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 (*2)
Spin up (*1)
1.0 A
Watts 5.0 W
Idle
0.236 A T.B.D
T.B.D 1.18 W
R/W (*3)
0.5 A T.B.D
T.B.D 2.5 W
Standby
0.076 A T.B.D
T.B.D 0.38 W
Sleep
0.03 AT.B.D
T.B.D 0.15 W
*1
Current at starting spindle motor.
*2
Power requirements reflect nominal values for +5V power.
*3
At 30% disk accessing.
(4) Current fluctuation (Typ.) at +5V when power is turned on
Figure 1.1 Current fluctuation (Typ.) at +5V when power is turned on
(5) Power on/off sequence
The voltage detector circuit monitors +5 V. The circuit does not allow a write
signal if either voltage is abnormal. This prevents data from being destroyed and
eliminates the need to be concerned with the power on/off sequence.