R500 datasheet(11/26 Pages) TI1

Part #	R500

Description	a Phase-Dimmable, Primary-Side Regulated LED Driver

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Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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11 / 26 page

Turn-on angle vs. Iout

0

50

100

150

200

250

300

5

25

45

65

85

105

125

145

165

Turn-on angle (degrees)

www.ti.com

Performance Data and Typical Characteristic Curves

7.6

Switch Node Voltage Valley Switching

Figure 9. Switch Node Waveform

(Ch1 - LED current Ch2- switch node Ch3 - rectified line voltage)

7.7

Triac Dimmer LED Current vs Conduction Angle

Figure 10. LED Current vs Conduction Angle

11

SLUU937 – May 2012

LM3447-A19-120VEVM is a Phase-Dimmable, Primary-Side Regulated LED

Driver

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