User manual

R15 C15
R2
R7
R1
R3
D7
Q1
R8
DIM
COFF
FLTR2
GND
ISNS
FLTR1
ASNS
BLDR
VCC
GND
LM3448
9
10
11
12
13
8
7
6
5
4
V+
C8
V
CC
R22 D8
R14
+
V
LED+
V
LED±
L1
C6
D2
V+
LINE
NEUTRAL
LINE EMI FILTER
D4
C4
C3
COFF
R16
C12
L2
C2
C
OFF
Current Source
C1
L3
C16
R4
C10
C14
R6
R5
D1
C5
NC
SW
SW
NC
SW
SW
14
15
16
3
2
1
R9
COFF
C13
U1
V
CC
www.ti.com Evaluation Board Schematic
15 Evaluation Board Schematic
WARNING
The LM3448 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.
25
SNOA559B–October 2011–Revised May 2013 AN-2127 LM3448 A19 Edison Retrofit Evaluation Board
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