Fairchild FEB157-001 - Manual (Page 13)

© 2007 Fairchild Semiconductor Page 13 of 17 Rev 1.1 April 2007
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4.2 Efficiency
The efficiency data shown is for the converter with a load of one, two and three LEDs driven at 1A.
Figure 8: Converter Efficiency Data Plotted Against Increasing Line Input
for LED Current of 1A.
0
10
20
30
40
50
60
70
80
90
90 120 270
Input Voltage (V)
Efficiency (%)
1 LED @ 1 A
2 LEDs @ 1 A
3 LEDs @ 1 A