Device Overview

(5) 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 (*6)

120 mA

0.60 W

 

 

 

R/W (on track) (*2)

380 mA

1.9 W

 

 

 

Seek (*5)

420 mA

2.1 W

 

 

 

Standby (*6)

26 mA

0.13 W

 

 

 

Sleep (*6)

26 mA

0.13 W

 

 

 

Energy

 

0.0050 W/GB (rank E / MHW2120BS)

Efficiency (*4)

 

0.0060 W/GB (rank E / MHW2100BS)

 

 

 

0.0075 W/GB (rank E / MHW2080BS)

 

 

0.0100 W/GB (rank D / MHW2060BS)

 

 

0.0150 W/GB (rank D / MHW2040BS)

 

 

 

*1 Maximum current and power 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.

*6 IPM mode: Slumber mode.

1-8

C141-E249

Page 30
Image 30
Fujitsu MHW2100BS, MHW2080BS, MHW2120BS, MHW2040BS Current Requirements and Power Dissipation, Current and power dissipation