l5973 STMicroelectronics, l5973 Datasheet - Page 8

• Manufacturer Part Number: l5973
• Description: Up To 2.5a Step Down Switching Regulator
• Manufacturer: STMicroelectronics

Typical characteristics
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Figure 8.
Figure 10. Efficiency vs output current
Tj(°C)
120
110
100
90
80
70
60
50
40
30
20
95
93
91
89
87
85
83
81
79
77
75
73
71
69
67
0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6
0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3
Vin=5V
Tamb=25°C
Vin=5V
Vo=1.8V
Junction temperature vs
output current
Vo=2.5V
Vo=3.3V
Io(A)
Io (A)
Vo=3.3V
Vo=1.8V
Vo=2.5V
Figure 9.
Figure 11. Efficiency vs output current
Tj (°C)
120
110
100
90
80
70
60
50
40
30
20
91
89
87
85
83
81
79
77
75
73
71
69
67
65
0.2 0.4 0.6 0.8
0.1 0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3
Vin=12V
Tamb=25°C
Vin=12V
Junction temperature vs
output current
Vo=2.5V
Vo=3.3V
1
Vo=5V
1.2 1.4 1.6 1.8
Io (A)
Io (A)
2
Vo=5V
2.2 2.4 2.6
Vo=2.5V
L5973D
Vo=3.3V