Datasheet

Typical characteristics L4973
16/28
Figure 21. Switching frequency vs.
input voltage
Figure 22. Switching frequency vs.
junction temperature
(see Figure 4)
Figure 23. Dropout voltage between pin
7,8 and 2,3
Figure 24. Efficiency vs. output voltage
(see Figure 6)
0 1020304050V
CC
(V)
90
95
100
105
fsw
(KHz)
D97IN631
Tamb=25˚C
-50 0 50 100 T
j(
˚C
)
90
95
100
105
fsw
(KHz)
D97IN632
0123I
O
(A)
0
0.2
0.4
0.6
ΔV
(V)
D97IN643
Tj=0˚C
Tj=125˚C
Tj=25˚C
0102030 V
O
(V)40
86
88
90
92
η
(%)
94
96
98
D97IN641
200KHz
100KHz
I
O
= 3A
V
CC
= 50V