Datasheet
Table Of Contents
- Figure 1. Application circuit
- 1 Pin settings
- 2 Maximum ratings
- 3 Electrical characteristics
- 4 Functional description
- 5 Application information
- 5.1 Input capacitor selection
- 5.2 Inductor selection
- 5.3 Output capacitor selection
- 5.4 Compensation network
- 5.5 Thermal considerations
- 5.6 Layout considerations
- 5.7 Application circuit
- Figure 18. Demonstration board application circuit
- Table 9. Component list
- Figure 19. PCB layout (component side)
- Figure 20. PCB layout (bottom side)
- Figure 21. PCB layout (front side)
- Figure 22. Junction temperature vs output current
- Figure 23. Junction temperature vs output current
- Figure 24. Junction temperature vs output current
- Figure 25. Efficiency vs output current
- Figure 26. Efficiency vs output current
- Figure 27. Efficiency vs output current
- Figure 28. Load regulation
- Figure 29. Line regulation
- Figure 30. Short circuit behavior
- Figure 31. Load transient: from 0.1 A to 0.7 A
- Figure 32. Soft-start
- 6 Application ideas
- 7 Package mechanical data
- 8 Order codes
- 9 Revision history
Application information L5980
32/42 Doc ID 13003 Rev 6
Figure 22. Junction temperature vs output
current
Figure 23. Junction temperature vs output
current
Figure 24. Junction temperature vs output
current
Figure 25. Efficiency vs output current
Figure 26. Efficiency vs output current Figure 27. Efficiency vs output current
70
75
80
85
90
95
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Io [A]
Efficiency [%]
VCC=12V
F
SW
=250KHz
Vo=5.0V
Vo=3.3
Vo=2.5V
76
78
80
82
84
86
88
90
92
94
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Io [A]
Efficiency [%]
VCC=5V
F
SW
=250KHz
Vo=3.3V
Vo=2.5V
Vo=1.8V
65
70
75
80
85
90
95
0.1 0.2 0.3 0.4 0.5 0.6 0.7
Io [A]
Efficiency [%]
VCC=3.3V
F
SW
=250KHz
Vo=2.5V
Vo=1.8V
Vo=1.2V