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L4973 データシート(PDF) 16 Page - STMicroelectronics

部品番号 L4973
部品情報  3.5A step down switching regulator
PDF  27 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L4973 データシート(HTML) 16 Page - STMicroelectronics

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Typical characteristics
L4973
16/27
Figure 27. Efficiency vs. output voltage
(Diode STPS745D)
Figure 28. Efficiency vs. output current (
see Figure 7)
Figure 29. Efficiency vs. output current
(see Figure 7)
Figure 30. Efficiency vs. output current
(see Figure 8)
010
15
20
VO(V)
30
525
86
88
90
92
η
(%)
94
96
98
D97IN642
200KHz
100KHz
IO = 3A
VCC = 35V
0123
IO(A)
80
85
90
95
η
(%)
D97IN645
Vcc=12V
Vcc=24V
Vcc=48V
VO = 5.1V
fsw = 100KHz
0123
IO(A)
75
80
85
90
η
(%)
D97IN646
Vcc=12V
Vcc=24V
Vcc=48V
VO = 5.1V
fsw = 200KHz
0123
IO(A)
75
80
85
90
η
(%)
D97IN644
Vcc=12V
Vcc=24V
Vcc=48V
VO = 3.3V
fsw = 100KHz



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