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
Ithd% vs. Input voltage
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90 100 110 120 130 140
Input Voltage (VAC)
Ithd%)
Performance Data and Typical Characteristic Curves
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7.4 Input Current THD
Figure 7. LM3447-A19-120VEVM- Ithd % vs Line Voltage
7.5 Output Ripple
Figure 8. Output Ripple
(Ch1 - LED current Ch2 - rectified line voltage Ch4- line current 200 mA/div)
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LM3447-A19-120VEVM is a Phase-Dimmable, Primary-Side Regulated LED SLUU937–May 2012
Driver
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