Datasheet
Table Of Contents
- AN-2083 LM3444 A19 Edison Retrofit Evaluation Board
- 1 Introduction
- 2 Evaluation Board Operating Conditions
- 3 Simplified LM3444 Schematic
- 4 Pin-Out
- 5 LM3444 Evaluation Board Schematic
- 6 Bill of Materials LM3444 Evaluation Board
- 7 Output Current versus Number of LEDs for Various Modifications
- 8 Typical Performance Characteristics
- 9 PCB Layout
- 10 EMI/EMC Information
LINE VOLTAGE (V
AC
)
EFFICIENCY (%)
90
85
80
75
70
80 90 100 110 120 130 140
18 LEDs @ 130 mA
LINE VOLTAGE (V
AC
)
POWER FACTOR
0.95
0.90
0.85
0.80
0.75
80 90 100 110 120 130 140
18 LEDs @ 130 mA
LINE VOLTAGE (V
AC
)
EFFICIENCY
(%)
90
85
80
75
70
80 90 100 110 120 130 140
9 LEDs @ 260 mA
LINE VOLTAGE (V
AC
)
POWER FACTOR
0.95
0.90
0.85
0.80
0.75
80 90 100 110 120 130 140
9 LEDs @ 260 mA
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Typical Performance Characteristics
8 Typical Performance Characteristics
Figure 2. Efficiency vs. Line Voltage Figure 3. Power Factor vs. Line Voltage
Original Circuit Original Circuit
Figure 4. Efficiency vs. Line Voltage Figure 5. Power Factor vs. Line Voltage
Modification A Modification A
7
SNVA455C–August 2010–Revised May 2013 AN-2083 LM3444 A19 Edison Retrofit Evaluation Board
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