NCV3066DR2G datasheet(11/20 Pages) ONSEMI

Part #	NCV3066DR2G

Description	Up to 1.5 A Constant Current Switching Regulator for LEDs with ON/OFF Function

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Manufacturer	ONSEMI [ON Semiconductor]

Direct Link	http://www.onsemi.com

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NCP3066, NCV3066

http://onsemi.com

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Figure 16. Buck with External Switch Demoboard Layout

Figure 17. Buck with External Switch Demoboard

Photo

350 mA 2 LED

(Vout = 6.4 V)

Figure 18. Efficiency of Buck LED Driver

INPUT VOLTAGE (V)

700 mA 2 LED

(Vout = 6.4 V)

350 mA 4 LED

(Vout = 12.8 V)

700 mA 4 LED

(Vout = 12.8 V)

Figure 19. Efficiency of Buck LED Driver at Iout = 3 A

50

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85

90

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30

35

INPUT VOLTAGE (V)

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3 A 4 LED

(Vout = 12.8 V)

3 A 2 LED

(Vout = 6.4 V)

Figure 15, Buck Demoboard With External Switch

Application Schematic illustrates the NCP3066 being used

as a PFET controller. Table 1. Bill Of Materials shows the

small number of additional parts which are necessary to

assemble mentioned demoboard. The demoboard based on

two layer PCB and the layout is mentioned in Figure 16.

Buck Demoboard Layout. The Line regulation is mentioned

in Figure 20, Line Regulation. The Figure 21, Dimming

characteristic shows behavior of circuitry in case the square

wave signal with 5 V amplitude and 300 Hz frequency was

delivered into ON/OFF pin of device.

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NCV3066DR2G Datasheet(PDF) 11 Page - ON Semiconductor

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