Datasheet
Table Of Contents
- Using the LM3447-A19-120VEVM
- 1 Introduction
- 2 Description
- 3 Electrical Performance Specifications
- 4 Schematic
- 5 Test Setup
- 6 Test Procedure
- 7 Performance Data and Typical Characteristic Curves
- 7.1 Efficiency
- 7.2 Power Factor
- 7.3 Line Regulation
- 7.4 Input Current THD
- 7.5 Output Ripple
- 7.6 Switch Node Voltage Valley Switching
- 7.7 Triac Dimmer LED Current vs Conduction Angle
- 7.8 Turn-On Angle vs Input Power
- 7.9 Input/Output Current and Line Voltage Waveforms vs. Dimmer Setting
- 7.10 Current Sense Waveform
- 7.11 LED Open and Short Circuit Waveforms
- 7.12 EMI Plot
- 7.13 Transformer Specification
- 8 EVM Assembly Drawing and PCB Layout
- 9 List of Materials
- Important Notices
Turn-on angle vs. Total Input Power
0.00
2.00
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10.00
12.00
5 55 105 155
Turn-on angle (degrees)
Total Input Power (W)
Performance Data and Typical Characteristic Curves
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7.8 Turn-On Angle vs Input Power
Figure 11. Turn-On Angle vs. Input Power
7.9 Input/Output Current and Line Voltage Waveforms vs. Dimmer Setting
Figure 12. Dimmer Full
(Ch4- LED current Ch3 - rectified line voltage Ch1 – line current)
12
LM3447-A19-120VEVM is a Phase-Dimmable, Primary-Side Regulated LED SLUU937–May 2012
Driver
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