Datasheet

L4973 Typical characteristics
17/28
Figure 25. Dropout voltage between pin
7,8 and 2,3
Figure 26. Efficiency vs. output voltage
(see Figure 4)
Figure 27. Efficiency vs. output voltage
(Diode STPS745D)
Figure 28. Efficiency vs. output current
(see Figure 7)
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
0101520 V
O
(V)30525
86
88
90
92
η
(%)
94
96
98
D97IN642
200KHz
100KHz
I
O
= 3A
V
CC
= 35V
0123I
O
(A)
80
85
90
95
η
(%)
D97IN645
Vcc=12V
Vcc=24V
Vcc=48V
V
O
= 5.1V
f
sw
= 100KHz