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L5973AD Datasheet(PDF) 15 Page - STMicroelectronics

Part # L5973AD
Description  2A switch step down switching regulator
PDF  21 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L5973AD Datasheet(HTML) 15 Page - STMicroelectronics

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L5973AD
Additional features and protections
15/21
Figure 8.
Junction temperature vs
output current
Figure 9.
Junction temperature vs
output current
20
30
40
50
60
70
80
90
100
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Io(A)
Tj(°C)
Vo=2.5V
Vo=3.3V
Vo=1.8V
Vin=5V
Tamb=25°C
20
30
40
50
60
70
80
90
100
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Io(A)
Tj(°C)
Vo=2.5V
Vo=3.3V
Vo=1.8V
Vin=5V
Tamb=25°C
20
30
40
50
60
70
80
90
100
110
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Io(A)
Tj(C)
Vin=12V
Tamb=25°C
Vo=3.3V
Vo=5V
Vo=2.5V
20
30
40
50
60
70
80
90
100
110
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Io(A)
Tj(C)
Vin=12V
Tamb=25°C
Vo=3.3V
Vo=5V
Vo=2.5V
Figure 10. Efficiency vs
output current
Figure 11. Efficiency vs
output current
65
70
75
80
85
90
95
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Io(A)
Vin=5V
Vout=2.5V
Vout=3.3V
Vout=1.8V
65
70
75
80
85
90
95
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Io(A)
Vin=5V
Vout=2.5V
Vout=3.3V
Vout=1.8V
65
70
75
80
85
90
95
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Io(A)
Vin=12V
Vout=3.3V
Vout=2.5V
Vout=5V
65
70
75
80
85
90
95
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Io(A)
Vin=12V
Vout=3.3V
Vout=2.5V
Vout=5V



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