THERMAL
THERMAL
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
LED_DRIVER
150112L15.5_ECI_M1A
5
R530
100K
OPT
R521
100
C512
33uF
100V
49inch
R525
270K
1/8W
1%
R502
1K
1%
49inch
R545
220K
1%
R551
0.1
R503
10K
1/16W
49inch
BOOST_EN
R543
1.5K
1%
R517
680
1/8W
1%
49inch
R542
39K
1%
R546
1.5K 1%
R512
0.1
1W
49inch
R540
100
C501
10uF
25V
R548
30K
1%
R515
100K
1/8W
49inch
R544
3.3
1/16W
L500
33uH
49inch
R539
100
L501
33uH
R522
120K
32_43inch
C529
0.1uF
25V
C508
0.1uF
50V
49inch
+19V
C523
220pF
100V
C525 1uF
25V
C522
1000pF
50V
C514
1uF
50V
49inch
C507
1uF
25V
49inch
R523
3K
INV_CTL
C526
220pF
100V
+3.3V_Normal
R514
0.1
1W
49inch
R550
100
PWM_DIM
IC501
DT1641AS
3
NC_1
2
OVP
4
PGND_1
1
EN
6
PDIM
5
PGND_2
7
RISET
8
LS8
9
LS7
10
LS6
11
LS5
12
NC_2
13
LGND
14
LS4
15
LS3
16
LS2
17
LS1
18
RT
19
COMP
20
RSS
21
NDRV
22
CS
23
VREF
24
VIN
25
[EP]GND
R535
100
R534
10K
C504
470pF
50V
49inch
R536
100
BLU_CURRENT_CTL
C527
220pF
100V
IC500
TPS40210DGQR
49inch
3
DIS/EN
2
SS
4
COMP
1
RC
5
FB
6
GND
7
ISNS
8
GDRV
9
BP
10
VDD
11
[EP]
R549
100
C502
0.1uF
50V
OPT
R519
10K
OPT
R537
100
R510
3.9K
1%
49inch
C515
1uF
50V
49inch
R516
100K
1/8W
49inch
R547
100
R500
1K
49inch
R531
100K
1%
C513
33uF
100V
49inch
R528
1K
1%
+19V
ZD500
33V
R541
100
C503
0.033uF
50V
49inch
D502
UF3D(SUZHOU GRANDE)
49inch
R501
18K
1%
49inch
C505
100pF
50V
49inch
C518
100pF
50V
R520
10K
C521
1000pF
50V
R538
100
R524
100K
C500
47uF
25V
C509
330pF
50V
49inch
R507
3.9K
1%
49inch
C511
33uF
100V
49inch
C528
4700pF
50V
TR501
MMBT3904(NXP)
E
B
C
C506
0.22uF
16V
49inch
C524
220pF
100V
C530
220pF
100V
49inch
C531
220pF
100V
49inch
C532
220pF
100V
OPT
P500
SMAW200-04
1
2
3
4
C520
1uF
100V
49inch
R532
15K
1%
32inch
R533
3.6K
1%
32inch
R529
30K
1%
32inch
R529-*1
13K
1%
43inch
R532-*1
12K
1%
43inch
R533-*1
10K
1%
43inch
R522-*1
150K
49inch
R529-*2
8.2K
1%
49inch
R532-*2
27K
1%
49inch
C510
1uF
25V
C533
33uF
C520-*1
0
1/4W
5%
32_43inch
D504
100V
BR210
32_43inch
D503
MBRD10U100CT
49inch
A1
C
A2
C534
33uF
R578
0
32_43inch
R579
0
49inch
R580
0
32_43inch
R518
47K
49inch
C535
4.7uF
50V
C536
4.7uF
50V
C539
4.7uF
50V
C519
1uF
100V
43_49inch
C519-*1
4.7uF
50V
32inch
R506
47
49inch
R508
47
49inch
R511
47
49inch
R513
47
49inch
R558
47
49inch
Q500
AOD478
49inch
S
D
G
C537
4.7uF
50V
32_43inch_AJ_KR_CO
C538
4.7uF
50V
32_43inch_AJ_KR_CO
R509
3.3
49inch
C541
1uF
100V
49inch
C540
1uF
100V
49inch
C517
0.1uF
OPT
C516
0.1uF
OPT
R555
0
32_43inch_AJ_KR_CO
R554
0
R553
0
EU_BR
L503
UBW2012-121F
OPT
L504
UBW2012-121F
OPT
L505
CIS21J121
32_43inch
R581
1K
49inch
R504
180K
49inch
R505
180K
49inch
Q502
SMN630LD
49inch
G
D
S
C537-*1
10uF
35V
49inch
C538-*1
10uF
35V
49inch
L502
33uH
43_49inch
L506
CIS21J121
32inch
L507
49inch
L508
49inch
D505
1N4148W-G
OPT
R582
2.2
OPT
R583
10K
OPT
R533-*2
3.3K
1/16W
1%
49inch
Q502-*1
AOD2922
32_43inch
G
D
S
121211
1K -> 3.9K
220p -> 330p
TOTAL LED DRIVER BLOCK
VOUT#2
VOUT = VREF*(1+48.8K/680)
= 0.7 *(1+48.8K/680)
= 50.5V
VOUT#1=50.5V
REDUCE RIPPLE CURRENT
REDUCE INDUCTOR TEMP ISSUE
To Improve EMI Issue
FIRST BOOST UP
To Improve EMI Issue
EXCEPT C500 C501
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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