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NCP5010
TYPICAL OPERATING CHARACTERISTICS
Condition: Efficiency = 100 x (Number of LED stacked x V LED x I LED )/P IN
90
80
90
80
70
V IN = 2.7 V
V IN = 3.3 V
V IN = 4.2 V
70
V IN = 2.7 V
V IN = 3.3 V
V IN = 4.2 V
60
50
60
50
0
10
20
30
40
50
60
70
0
10
20
30 40
50
60
70
90
80
I OUT (mA)
Figure 3. Efficiency vs. Current @ 3 LEDS (10.5 V)
L = Coilcraft DT1608C?223
I OUT (mA)
Figure 4. Efficiency vs. Current @ 3 LEDS (10.5 V)
L = TDK VLF4012AT?220
90
80
70
V IN = 2.7 V
V IN = 3.3 V
V IN = 4.2 V
70
V IN = 2.7 V
V IN = 3.3 V
V IN = 4.2 V
60
50
60
50
0
10
20
30 40
50
60
70
0
10
20
30
40
50
60
70
90
80
I OUT (mA)
Figure 5. Efficiency vs. Current @ 4 LEDS (14 V)
L = Coilcraft DT1608C?223
I OUT (mA)
Figure 6. Efficiency vs. Current @ 4 LEDS (14 V)
L = TDK VLF4012AT?220
90
80
70
V IN = 2.7 V
V IN = 3.3 V
V IN = 4.2 V
70
V IN = 2.7 V
V IN = 3.3 V
V IN = 4.2 V
60
50
60
50
0
10
20
30
40
50
60
70
0
10
20
30
40
50
60
70
I OUT (mA)
Figure 7. Efficiency vs. Current @ 5 LEDS (17.5 V)
L = Coilcraft DT1608C?223
I OUT (mA)
Figure 8. Efficiency vs. Current @ 5 LEDS (17.5 V)
L = TDK VLF4012AT?220
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