L4973 STMicroelectronics, L4973 Datasheet - Page 14

• Manufacturer Part Number: L4973
• Description: 3.5A STEP DOWN SWITCHING REGULATOR
• Manufacturer: STMicroelectronics

Typical characteristics
14/27
Figure 19. Load regulation (see
Figure 21. Switching frequency vs.
(KHz)
3.35
3.34
3.33
3.32
3.31
fsw
V
(V)
3.3
105
100
95
90
O
0
0
input voltage
10
Tamb=25˚C
1
V
CC
20
= 35V
30
2
40
Tj=125˚C
Tj=25˚C
3
50 V
D97IN661
D97IN631
Figure
I
CC
O
(A)
(V)
4) Figure 20. Switching frequency vs.
Figure 22. Switching frequency vs.
(KHz)
(KHz)
500
200
100
fsw
50
20
10
fsw
5
105
100
95
90
-50
0
R2 and C7
junction temperature
(see
20
0
Figure
40
50
(Figure
4)
60
Tamb=25˚C
100
80
4)
D97IN632
D97IN630
R2(KΩ)
Tj(˚C)
L4973