NCP5010 ON Semiconductor, NCP5010 Datasheet - Page 5

• Manufacturer Part Number: NCP5010
• Description: Boost Converter
• Manufacturer: ON Semiconductor

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