L5987 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'L5987' PDF : 40 Pages View PDF
Application information
Figure 23. Junction temperature
vs. output current - VIN = 12 V
L5987
Figure 24. Junction temperature
vs. output current - VIN = 5 V
Figure 25. Junction temperature
vs. output current - VIN = 3.3 V
Figure 26. Efficiency vs. output current
- VIN = 12 V
92
90
88
86
84
82
80
78
VIN=12V
76
0.3
0.8
1.3
1.8
Io [A]
FSW=250kHz
VO=5V
VO=3.3V
VO=2.5V
2.3
2.8
Figure 27. Efficiency vs. output current
- VIN = 5 V
95
FSW=250kHz
90
85
VO=3.3V
80
VO=2.5V
75
VIN=5V
VO=1.8V
70
0.3
0.8
1.3
1.8
2.3
2.8
Io [A]
Figure 28. Efficiency vs. output current
- VIN = 3.3 V
95
90
85
80
75
70
VIN=3.3V
65
0.3
0.8
1.3
1.8
Io [A]
VO=2.5V
VO=1.8V
VO=1.2V
2.3
2.8
34/40
DocID14972 Rev 4
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