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L7981 Datasheet(PDF) 33 Page - STMicroelectronics

No. de pieza L7981
Descripción Electrónicos  3 A step-down switching regulator
PDF  44 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L7981 Datasheet(HTML) 33 Page - STMicroelectronics

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L7981
Application informations
Doc ID 15182 Rev 3
33/44
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
72
77
82
87
92
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Io [A]
VOUT=5.0 V
fsw=250 kHz
VIN=18V
VIN=12V
VIN=24V
65
70
75
80
85
90
95
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Io [A]
VOUT=3.3 V
fsw=250 kHz
VIN=5V
VIN=12V
VIN=24V
50
55
60
65
70
75
80
85
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Io [A]
VOUT=1.8 V
fsw=250 kHz
VIN=5V
VIN=12V
VIN=24V



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