E-L4973D3.3 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'E-L4973D3.3' PDF : 27 Pages View PDF
Typical characteristics
L4973
Figure 19. Load regulation (see Figure 4) Figure 20. Switching frequency vs.
R2 and C7 (Figure 4)
VO
(V)
3.35
3.34
3.33
3.32
3.31
3.3
0
VCC = 35V
D97IN661
Tj=125˚C
Tj=25˚C
1
2
3
IO(A)
fsw
(KHz)
500
200
100
50
20
10
5
0
D97IN630
Tamb=25˚C
0.82nF
1.2nF
2.2nF
3.3nF
4.7nF
5.6nF
20
40
60
80 R2(KΩ)
Figure 21. Switching frequency vs.
input voltage
fsw
(KHz)
105
Tamb=25˚C
D97IN631
Figure 22. Switching frequency vs.
junction temperature
(see Figure 4)
fsw
(KHz)
D97IN632
105
100
100
95
95
90
0
10 20 30 40 50 VCC(V)
90
-50
0
50
100 Tj(˚C)
14/27
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