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
Electrical Performance Specifications
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3 Electrical Performance Specifications
Table 1. LM3447-A19-120VEVM Electrical Performance Specifications
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Input Characteristics
Voltage range 90 120 135 V
Maximum input current 100 mA
Output Characteristics
Output voltage, V
OUT
9 to 10 LED’s 28 30 32 V
Output load current, I
OUT
240 275 310 mA
Output current ripple V
IN
= 120 V
AC
100 mApp
Output over voltage 36 V
Systems Characteristics
Switching frequency 75 kHz
Full-load efficiency V
IN
= 120 V
AC
82%
Power factor, PF 0.98
4
LM3447-A19-120VEVM is a Phase-Dimmable, Primary-Side Regulated LED SLUU937–May 2012
Driver
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