L5973AD Datasheet, PDF (10/14 Pages) STMicroelectronics – 2A SWITCH STEP DOWN SWITCHING REGULATOR

L5973AD
Figure 10. Junction Temperature vs. Output
Current
Tj(°C)
100
90
Vin=5V
80 _Tamb=25°C
70
60
50
40
30
20
0.2 0.4 0.6 0.8
Vo=3.3V
Vo=2.5V
Vo=1.8V
1 1.2 1.4 1.6 1.8 2
Io(A)
Figure 11. Junction Temperature vs Output
Current
Tj(C)
110
100
90 ^Vin=12V
80 ^Tamb=25°C
70
60
50
40
30
20
0.2 0.4 0.6 0.8
Vo=5V
Vo=3.3V
Vo=2.5V
1 1.2 1.4 1.6 1.8 2
Io(A)
Figure 12. Efficiency vs. Output Current
95
90
85
Vout=3.3V
80
75
Vin=5V
70
Vout=2.5V
Vout=1.8V
65
0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
Io(A)
Figure 13. Efficiency vs. Output Current
95
90
85
80
75
70
Vin=12V
65
0.2 0.4 0.6 0.8
Vout=5V
Vout=2.5V
Vout=3.3V
1 1.2 1.4 1.6 1.8 2
Io(A)
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