Datasheet





SLIS004B − APRIL 1993 − REVISED SEPTEMBER 1995
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443
• HOUSTON, TEXAS 77251−1443
TYPICAL CHARACTERISTICS
NOTE A: Technique should limit T
J
− T
C
to 10°C maximum.
100
60
40
20
140
80
− 50 0 50 100 150
120
SWITCHING TIME
vs
CASE TEMPERATURE
Switching Time − ns
t
PLH
t
r
t
f
T
C
− Case Temperature − °C
t
PHL
I
D
= 350 mA
See Note A
Figure 11
THERMAL INFORMATION
t − On Time − s
NE PACKAGE
TRANSIENT THERMAL IMPEDANCE
vs
ON TIME
C
°
θ
Z − Transient Thermal Impedance − /W
JA
The single-pulse curve represents measured data. The curves
for various pulse durations are based on the following equation:
0.1
0.001 0.01 1 10 100
1
10
100
1000
d = 2%
d = 5%
Single Pulse
d = 10%
d = 20%
d = 50%
t
w
t
c
I
D
0
Z
q
JA
+
Ť
t
w
t
c
Ť
R
q
JA
)
Ť
1 –
t
w
t
c
Ť
Z
q
ǒ
t
w
) t
c
Ǔ
) Z
q
ǒ
t
w
Ǔ
–Z
q
ǒ
t
c
Ǔ
= the single-pulse thermal impedance
for t = t
w
seconds
= the single-pulse thermal impedance
for t = t
c
seconds
= the single-pulse thermal impedance
for t = t
w
+ t
c
seconds
Where:
d = t
w
/t
c
0.1
Z
q
ǒ
t
w
Ǔ
Z
q
ǒ
t
c
Ǔ
Z
q
ǒ
t
w
) t
c
Ǔ
Figure 12