DocID026535 Rev 1

11/35

AN4544

Datasheet explanation

35

Equation 2

Figure 7. How to calculate the continuous collector current using the output

characteristic curve

Equation 3

Equation 4

Furthermore, power dissipation and continuous collector current are both reported in the

P

TOT

T

Jmax

T

C

–

R

th J

C

–

()

-----------------------------

V

CE

I

C

⋅

==

R

CEO

ΔV

CE

ΔI

C

---------------

=

I

C

V

CEO

V

2

CEO

4R

CEO

T

Jmax

T

C

–

R

TH JC

()

-----------------------------





•

•

+

+

–

2R

CEO

•

----------------------------------------------------------------------------------------------------------------------

=