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AN1330 Datasheet(PDF) 24 Page - STMicroelectronics

Part # AN1330
Description  Designing with the L5970D 1A high efficiency DC-DC converter
PDF  31 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN1330 Datasheet(HTML) 24 Page - STMicroelectronics

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Application information
AN1330
24/31
Figure 18.
PCB layout (bottom side)
Figure 19.
PCB layout (front side)
Below, some graphs are provided which show the Tj versus output current in different input
and output voltage conditions, as well as some efficiency measurements.
AM00019v1
AM00020v1
Figure 20.
Junction temperature vs. output
current (VCC = 5 V)
Figure 21.
Junction temperature vs. output
current (VCC = 12 V)
20
30
40
50
60
70
80
90
100
110
120
130
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
Io(A)
Tj(°C)
Vo=3.3V
Vo=2.5V
Vo=1.8V
Vcc=5V
Tamb=25°C
20
30
40
50
60
70
80
90
100
110
120
130
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
Io(A)
Tj(°C)
Vo=5V
Vo=2.5V
Vo=3.3V
Vcc=12V
Tamb=25°C



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