Led Driver Circuit Diagram - LG DP372D Service Manual

9. LED DRIVER CIRCUIT DIAGRAM

12
11
10
TP1 TP1
VIN 6-12V
9
CN1 CN1
TP3 TP3
1
5 2 GND
4 3
8 CON3_1.25MM CON3_1.25MM
TP6 TP6
PWRCTL_LCD
7
6
5
4
3
2
1
A B C D
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Only for training and service purposes
C2 C2 C3 C3
104 104 2.2uF/16V X5R 2.2uF/16V X5R
R2 R2
10K 10K R3 R3
100K 100K
SMBT3906 SMBT3906
Q1 Q1
R4 R4
10K 10K 1
C C
B B
1
Q2 Q2
R7 R7 E E SMBT3904 SMBT3904
10K 10K
R9 R9
R8 R8 68K 68K
5.6K 5.6K
E F G H
U1 U1 C1 C1
MP2359DT MP2359DT
103 103
5 1
IN BST
TP2 TP2
6
SW
C4 C4
334 334
4 3
EN FB
TP5 TP5
TP7 TP7
I J K L M
3-43 3-44
R1 R1
0R 0R
L1 L1 LSS57S30-330(33uH) LSS57S30-330(33uH)
D1 D1
D2 D2
SS14 SS14
C5 C5 C6 C6
D_13V D_13V
104 104
2.2uF/16V X5R 2.2uF/16V X5R
TP4 TP4
R5 R5 R6 R6
270K 270K 1K 1K
R10 R10 R11 R11
6.8 1% 6.8 1% NC NC
MP2359 LED Driver Application MP2359 LED Driver Application MP2359 LED Driver Application
Wednesday, August 29, 2007 Wednesday, August 29, 2007 Wednesday, August 29, 2007
N O P Q
CN2 CN2
3.5-2P 3.5-2P
1 4
1 4
2 3
2 3
R S T
LGE Internal Use Only