L5972 データシートの表示（PDF） - STMicroelectronics
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L5972 Datasheet PDF : 10 Pages
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Figure 11. Junction Temperature vs. Output
Current
TJ(°C)
100.0
90.0
Vin=5V
Tamb.=25 °C
80.0
Vo=2.5V Vo=3.3V
70.0
Vo=1.8V
60.0
50.0
40.0
30.0
20.0
0.2 0.4 0.6 0.8 1
1.2 1.4 1.6 1.8 2
Io(A)
Figure 12. Junction Temperature vs. Output
Current
TJ(°C)
100.0
90.0
80.0
70.0
Vin=12V
Tamb= 25°C
Vo=5V Vo=3.3V
60.0
Vo=2.5V
50.0
40.0
30.0
20.0
0.2 0.4 0.6 0.8 1
1.2 1.4 1.6 1.8 2
Io(A)
L5972D
Figure 13. Efficiency vs. Output Current
95
93
91
Vo=3.3V
89
87
85
Vo=2.5V
83
81
79
Vo=1.8V
77
75
73
Vcc=5V
71
69
67
0.1
0.3
0.5
0.7
0.9
1.1
1.3
1.5
1.7
Io (A)
Figure 14. Efficiency vs. Output Current
96
94
92
Vo=5V
90
88
Vo=3.3V
86
84
82
80
Vo=2.5V
78
76
74
Vin=12V
72
70
0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.7
Io (A)
7/10
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