NCP5010 ON Semiconductor, NCP5010 Datasheet - Page 6

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

1.04
1.02
1.00
0.98
0.96
90
80
70
60
50
40
30
20
90
80
70
60
50
40
30
20
−40
2.5
2.5
Figure 13. Oscillator Frequency vs. Temperature
Figure 11. Efficiency vs. V
Figure 9. Efficiency vs. V
−20
3.0
3.0
V
L = Coilcraft DT1608C−223
I
I
IN
OUT
OUT
L = Coilcraft DT1608C−223
= 2.7 V
0
= 33 mA
= 28 mA
TEMPERATURE (°C)
3.5
3.5
Condition: Efficiency = 100 x (Number of LED stacked x V
20
V
V
I
I
OUT
OUT
IN
IN
4.0
4.0
(V)
(V)
= 23 mA
= 23 mA
TYPICAL OPERATING CHARACTERISTICS
IN
40
IN
@ 5 LEDS (17.5 V)
@ 3 LEDS (10.5 V)
V
4.5
4.5
IN
= 3.6 V
60
I
I
I
I
OUT
OUT
OUT
OUT
V
IN
= 1 mA
= 1 mA
= 10 mA
5.0
= 10 mA
5.0
= 5.5 V
80
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NCP5010
100
5.5
5.5
6
510
505
500
495
490
900
800
700
600
500
400
300
90
80
70
60
50
40
30
20
−40
2.5
−40
Figure 12. Feedback Voltage vs. Temperature
Figure 10. Efficiency vs. V
V
Figure 14. NMOS R
IN
V
−20
IN
= 5.5 V
−20
3.0
= 2.7 V
I
V
OUT
L = Coilcraft DT1608C−223
LED
IN
0
0
= 3.6 V
= 33 mA
3.5
TEMPERATURE (°C)
TEMPERATURE (°C)
V
x I
V
IN
IN
LED
= 2.7 V
= 3.6 V
20
20
)/P
V
I
OUT
DS(on)
IN
4.0
IN
(V)
= 23 mA
40
40
IN
vs. Temperature
@ 4 LEDS (14 V)
4.5
60
60
V
I
I
OUT
OUT
IN
= 5.5 V
= 1 mA
= 10 mA
5.0
80
80
100
5.5
100