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L4973D3 データシート(PDF) 9 Page - STMicroelectronics

部品番号 L4973D3
部品情報  3.5A STEP DOWN SWITCHING REGULATOR
PDF  16 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4973D3 データシート(HTML) 9 Page - STMicroelectronics

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0123
IO(A)
5.0
5.05
5.1
5.15
VO
(V)
D97IN640
Tj=25
°C
Tj=125
°C
VCC = 35V
Figure 10: Load Regulation (see fig. 1c)
0
1020304050
VCC(V)
3.3
3.31
3.32
3.34
VO
(V)
3.33
3.35
D97IN660A
Tj=25
°C
Tj=125
°C
IO =1A
Figure 11: Line Regulation (see fig. 1d)
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
Figure 12: Load Regulation (see fig. 1d)
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
Figure 13: Switching Frequency vs.R2 and C7
(fig. 1)
0
1020
304050
VCC(V)
90
95
100
105
fsw
(KHz)
D97IN631
Tamb=25
°C
Figure 14: Switching Frequency vs. Input Voltage
-50
0
50
100
Tj(
°C)
90
95
100
105
fsw
(KHz)
D97IN632
Figure 15: Switching Frequency vs. Junction
temperature (see fig. 1)
L4973V3 - L4973V5 - L4973D3 - L4973D5
9/16



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