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L4973 Datasheet(PDF) 14 Page - STMicroelectronics

Part # L4973
Description  3.5A step down switching regulator
PDF  27 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4973 Datasheet(HTML) 14 Page - STMicroelectronics

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Typical characteristics
L4973
14/27
Figure 19. Load regulation (see Figure 4) Figure 20. Switching frequency vs.
R2 and C7 (Figure 4)
Figure 21. Switching frequency vs.
input voltage
Figure 22. Switching frequency vs.
junction temperature
(see Figure 4)
0123
IO(A)
3.3
3.31
3.33
3.35
VO
(V)
3.32
3.34
D97IN661
Tj=25˚C
Tj=125˚C
VCC = 35V
0
20
40
60
80
R2(K
Ω)
5
10
20
50
100
200
500
fsw
(KHz)
D97IN630
0.82nF
1.2nF
2.2nF
3.3nF
4.7nF
5.6nF
Tamb=25˚C
0
1020304050
VCC(V)
90
95
100
105
fsw
(KHz)
D97IN631
Tamb=25˚C
-50
0
50
100
Tj(˚C)
90
95
100
105
fsw
(KHz)
D97IN632



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