Datasheet

L5972D Application circuit
9/15
Figure 13. Junction temperature vs
output current
Figure 14. Efficiency vs output current
Figure 15. Junction temperature vs
output current
Figure 16. Efficiency vs output current
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
Io(A)
TJ(°C)
Vin=5V
Tamb.=25
°
C
Vo=1.8V
Vo=2.5V
Vo=3.3V
67
69
71
73
75
77
79
81
83
85
87
89
91
93
95
0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.7
Io (A)
Efficiency (%)
Vo=1.8V
Vo=2.5V
Vo=3.3V
Vin=5V
Vo=1.8V
Vo=2.5V
Vo=3.3V
20.0
30.0
40.0
50.0
60.0
70.0
80.0
90.0
100.0
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=5V
Vin=12V
Tamb= 25°C
70
72
74
76
78
80
82
84
86
88
90
92
94
96
0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.7
Io (A)
Efficiency (%)
Vin=12V
Vo=2.5V
Vo=3.3V
Vo=5V
Vin=12V
Vo=2.5V
Vo=3.3V
Vo=5V