NCP5006 ON Semiconductor, NCP5006 Datasheet - Page 10

• Manufacturer Part Number: NCP5006
• Description: Compact Backlight LED Boost Driver
• Manufacturer: ON Semiconductor

100
90
80
70
60
50
40
30
20
10
2.5
2.0
1.5
1.0
0.5
−1
−2
−3
−4
−5
0
2.50
5
4
3
2
1
0
−40
0
2.5
Figure 14. Overall Efficiency vs. Power Supply @
All curve conditions: L = 22 mH, C
3 LED/40 mA
Frequency = f(V
2 LED/40 mA
Yield = f(V
Figure 18. Typical Operating Frequency
Figure 16. Feedback Voltage Variation
−20
3.00
3.0
Feedback Variation vs. Nominal
(V
bat
Typical curve @ T° = +25°C
I
out
0
4 LED/40 mA
bat
3.50
= 3.0 V, 6.0 V, T = 255C)
3.5
TEMPERATURE (°C)
V
) @ I
= 40 mA, L = 22 mH
bat
bat
2 LED
3 LED
4 LED
5 LED
= 3.1 V thru 5.5 V
) @ I
20
V
out
V
bat
bat
4.00
4.0
= 40 mA/L
out
(V)
(V)
40
= 20 mA−L
in
5 LED/40 mA
= 4.7 mF, C
4.50
4.5
60
out
= 22 mH
out
5.00
out
5.0
80
= 22 mH
= 1.0 mF,
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NCP5006
5.50
100
5.5
10
205
204
203
202
201
200
199
198
197
196
195
26
25
24
23
22
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
−40
−40
2.7
V
V
−20
bat
bat
−20
Feedback Variation vs. Temperature
Figure 15. Feedback Voltage Stability
= 2.7 V
= 5.5 V
Figure 19. Overvoltage Protection
3.3
0
Figure 17. Standby Current
Standby Current vs. V
OVP vs. Temperature
0
V
TEMPERATURE (°C)
bat
TEMPERATURE (°C)
20
= 3.1 V thru 5.5 V
20
3.9
V
40
bat
(V)
40
60
V
4.5
bat
−40°C thru 125°C
80
bat
60
= 3.6 V
100
5.1
80
120
100
130
5.5