Data Sheet

FDD8782/FDU8782 N-Channel PowerTrench
®
MOSFET
FDD8782/FDU8782 Rev. 1.2 www.fairchildsemi.com5
Figure 13. Transient Thermal Response Curve
10
-5
10
-4
10
-3
10
-2
10
-1
10
0
10
1
1E-3
0.01
0.1
1
DUTY CYCLE-DESCENDING ORDER
NORMALIZED THERMAL
IMPEDANCE, Z
θ
JC
t, RECTANGULAR PULSE DURATION(s)
D = 0.5
0.2
0.1
0.05
0.02
0.01
SINGLE PULSE
2
P
DM
t
1
t
2
NOTES:
DUTY FACTOR: D = t
1
/t
2
PEAK T
J
= P
DM
x Z
θJC
x R
θJC
+ T
C
Typical Characteristics
T
J
= 25°C unless otherwise noted