Typical Characteristics
1.2
1.0
0.8
0.6
0.4
0.2
300
250
200
150
100
50
CURRENT LIMITED
BY PACKAGE
V GS = 10V
0.0
0
25
50 75 100 125 150
175
0
25
50
75
100
125
150
175
T C , CASE TEMPERATURE ( o C )
Figure 1. Normalized Power Dissipation vs Case
Temperature
2
T C , CASE TEMPERATURE ( o C )
Figure 2. Maximum Continuous Drain Current vs
Case Temperature
1
DUTY CYCLE - DESCENDING ORDER
D = 0.50
0.20
0.1
0.10
0.05
0.02
0.01
P DM
t 1
0.01
NOTES:
DUTY FACTOR: D = t 1 /t 2
t 2
PEAK T J = P DM x Z θ JC x R θ JC + T C
SINGLE PULSE
10
10
10
10
10
10
10
1E-3
-5
-4
-3
-2
-1
0
1
t, RECTANGULAR PULSE DURATION(s)
Figure 3. Normalized Maximum Transient Thermal Impedance
10000
V GS = 10V
TRANSCONDUCTANCE
MAY LIMIT CURRENT
IN THIS REGION
T C = 25 o C
FOR TEMPERATURES
ABOVE 25 o C DERATE PEAK
CURRENT AS FOLLOWS:
1000
I = I 25
175 - T C
150
100
SINGLE PULSE
10
10
10
10
10
10
10
10
-5
-4
-3
-2
-1
0
1
t, RECTANGULAR PULSE DURATION(s)
Figure 4. Peak Current Capability
FDB8442 Rev. C0
4
www.fairchildsemi.com
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