NCP5005SNT1G datasheet(10/23 Pages) ONSEMI

Part #	NCP5005SNT1G

Description	Compact Backlight LED Boost Driver

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Manufacturer	ONSEMI [ON Semiconductor]

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NCP5005

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Figure 14. Overall Efficiency vs. Power Supply @

Iout = 40 mA, L = 22 mH

Figure 15. Feedback Voltage Stability

Vbat (V)

205

200

195

TEMPERATURE (

°C)

199

202

203

201

020

100

198

197

196

−40

40

−20

60

80

204

5

0

−5

TEMPERATURE (

°C)

−1

2

3

1

0

20

100

−2

−3

−4

−40

40

−20

60

80

4

Vbat = 3.1 V thru 5.5 V

Figure 16. Feedback Voltage Variation

0

10

20

30

40

50

60

70

80

90

100

2.50

3.00

3.50

4.00

4.50

5.00

5.50

5 LED/40 mA

3 LED/40 mA

4 LED/40 mA

2 LED/40 mA

Feedback Variation vs. Temperature

Feedback Variation vs. Nominal

(Vbat = 3.0 V, 6.0 V, T = 255C)

Figure 17. Standby Current

1.4

2.7

0.0

Vbat (V)

0.6

1.0

0.8

5.5

0.4

0.2

1.2

−40

°C thru 125°C

3.3

3.9

4.5

5.1

Standby Current vs. Vbat

4 LED

5 LED

Figure 18. Typical Operating Frequency

0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

2 LED

Vbat (V)

3 LED

Figure 19. Overvoltage Protection

26

24

−40

22

TEMPERATURE (

°C)

25

0

100

23

40

80

Vbat = 5.5 V

Vbat = 2.7 V

Vbat = 3.6 V

20

130

−20

60

120

Frequency = f(Vbat) @ Iout = 20 mA−Lout = 22 mH

OVP vs. Temperature

Yield = f(Vbat) @ Iout = 40 mA/Lout = 22 mH

All curve conditions: L = 22

mH, Cin = 4.7 mF, Cout = 1.0 mF,

Typical curve @ T

° = +25°C

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NCP5005SNT1G Datasheet(PDF) 10 Page - ON Semiconductor

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