User manual

R15
C11
FILTER
R2
R7
R1
R3
D7
Q1
NC
NC
NC
COFF
FILTER
NC
VCC
GND
GATE
ISNS
LM3444
1
2
3
4
5
10
9
8
7
6
V+
C7 C8
V
CC
R22 D8
R12
R13 R14
+
VLED+
VLED±
L1
V+
LINE
NEUTRAL
INPUT EMI FILTER AND RECTIFIER CIRCUIT
Q2
D1
D3
D4
D5C3
C4
R16
C12
C1
C6
L2
R6
R24
C2
RT1
D2
F1
T1
C13
+
www.ti.com LM3444 120VAC, 8W Isolated Flyback LED Driver Demo Board Schematic
5 LM3444 120VAC, 8W Isolated Flyback LED Driver Demo Board Schematic
WARNING
The LM3444 evaluation board has exposed high voltage
components that present a shock hazard. Caution must be taken
when handling the evaluation board. Avoid touching the evaluation
board and removing any cables while the evaluation board is
operating. Isolating the evaluation board rather than the
oscilloscope is highly recommended.
3
SNVA454E–September 2010–Revised May 2013 AN-2082 LM3444 -120VAC, 8W Isolated Flyback LED Driver
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