FDMS3604S

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7

TYPICAL CHARACTERISTICS (Q1 N−CHANNEL)

TJ = 25°C Unless Otherwise Noted (continued)

Figure 13. Junction−to−Ambient Transient Thermal Response Curve

10

−4

10

−3

10

−2

10

−1

11

0

100

1000

0.001

0.01

0.1

1

SINGLE PULSE

RqJA = 125 oC/W

DUTY CYCLE−DESCENDING ORDER

t, RECTANGULAR PULSE DURATION (sec)

D = 0.5

0.2

0.1

0.05

0.02

0.01

2

PDM

t1

t2

NOTES:

DUTY FACTOR: D = t1/t2

PEAK TJ = PDM x ZqJA x RqJA + TA

(Note 1c)