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C4, C6
Q1
R18
R11
R9
R20
C12
C11
Q5
V
IN
Q7
Q6
Q4
D2
DIM
R17
R19
DIM
Q2
V
IN
L1
C9
R6
C8
R1
R10
R13
R5
R8
R7
R4
C7
C2, C3
OVP
nDIM
LM3423
AGND
PGND
DDRV
DAP
GATE
EN
COMP
VIN
CSH
RCT
IS
HSP
RPD
VCC
HSN
1
2
3
4
5
6
7
8
20
19
18
17
16
15
14
13
FLT DPOL
9 12
TIMR LRDY
10 11
R2
C10
R14
V
IN
R15
V
IN
V
CC
V
CC
LED-
8
9
10
12
13
14
7
6
5
3
2
1
J7
11 4
D1
LED+
TP1
Q3
PWM
R12
BNC
TP5
TP7
RPD
RPD
TP4
TP10
GND
J3
R16
C5
C1
R3
J1
J2
J4
J5
J6
www.ti.com Schematic for 551600305-001 REV1
8 Schematic for 551600305-001 REV1
13
SNVA415C–June 2010–Revised May 2013 AN-2010 LM3423 Buck-Boost 2 Layer Evaluation Board
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