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L5981 Arkusz danych(PDF) 31 Page - STMicroelectronics

Numer części L5981
Szczegółowy opis  1 A step-down switching regulator
PDF  37 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L5981 Arkusz danych(HTML) 31 Page - STMicroelectronics

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Figure 22.
Junction temperature vs output
current
Figure 23.
Junction temperature vs output
current
Figure 24.
Junction temperature vs output
current
Figure 25.
Efficiency vs output current
Figure 26.
Efficiency vs output current
Figure 27.
Efficiency vs output current
70
75
80
85
90
95
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
Io [A]
VCC=12V
FSW=250KHz
Vo=5.0V
Vo=3.3V
Vo=2.5V
76
78
80
82
84
86
88
90
92
94
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Io [A]
VCC=5V
FSW=250KHz
Vo=3.3V
Vo=2.5V
Vo=1.8V
65
70
75
80
85
90
95
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Io [A]
VCC=3.3V
FSW=250KHz
Vo=2.5V
Vo=1.8V
Vo=1.2V



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