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Cheetah 4LP Product Manual, Rev. B
4.0
3.0
2.0
1.0
0.0
T0 T1
Figure 3.
Typical Cheetah 4LP family drive +12 V current profile
6.3
Power dissipation
For drives with single-ended interface circuits ("N," "W," and "WC" models), typical operating random read
power dissipation is 14.9 watts (51 BTUs per hour) of DC power average at nominal voltages. Typical power
dissipation under idle conditions is 12 watts (41 BTUs per hour).
For drives with differential interface circuits ("WD" and "DC" models), typical operating random read power dis-
sipation is 15.9 watts (54 BTUs per hour) of DC power average at nominal voltages. Typical power dissipation
under idle conditions is 12.4 watts (42 BTUs per hour).
6.4
Environmental limits
Temperature and humidity values experienced by the drive must be such that condensation does not occur on
any drive part. Altitude and atmospheric pressure specifications are referenced to a standard day at 58.7°F
(14.8°C). Maximum wet bulb temperature is 82°F (28°C).
Peak AC
Nominal (average DC) curve
Min AC
T2
0
2
4
T3
6
8
10
Seconds
12
14
16
19
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