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L5983 Datasheet(PDF) 31 Page - STMicroelectronics

Part # L5983
Description  1.5A step-down switching regulator
PDF  37 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L5983 Datasheet(HTML) 31 Page - STMicroelectronics

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Application informations
L5983
31/37
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
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
Io [A]
VCC=12V,
FSW=250kHz
Vo=3.3V
Vo=5V
Vo=2.5V
76
78
80
82
84
86
88
90
92
94
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
Io [A]
VCC=5V,
FSW=250kHz
Vo=3.3V
Vo=2.5V
Vo=1.8V
70
75
80
85
90
95
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
Io [A]
VCC=3.3V,
FSW=250kHz
Vo=2.5V
Vo=1.8V
Vo=1.2V



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