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TBD
44A/45A/450A
+19V
BOOST
READY
BOOST
C802
C803
C804
10uF
0.1uF
100pF
25V
25V
50V
BOOST
R801
10K
BOOST
R802
1K
BOOST_EN
BOOST
12.05.17 To improve audible noise
C806
C1103 2200pF->47pF
2200pF
C1105 47pF->OPT
50V
12.07.03 To improve backlight blinking
BOOST
C1103 47pF->2200pF
R805
C1105 47pF->Apply
R1103 18K->470K
470K
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.
BOOST-UP
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
BOOST
L801
10uH
BOOST
BOOST
R812
R813
220K
30K
BOOST
IC801
[EP]
TPS40210DGQR
RC
VDD
1
10
BOOST
C805
0.22uF
SS
BP
2
9
BOOST
16V
DIS/EN
GDRV
3
8
COMP
ISNS
4
7
BOOST
READY
BOOST
C809
C810
BOOST
C808
0.1uF
100pF
FB
GND
1uF
R815
5
6
25V
50V
BOOST
10V
1K
C807
47pF
50V
BOOST
R807
51K
BOOST
R806
1.5K
BOOST
D801
BR210
100V
READY
BOOST
BOOST
C814
C815
C811
68uF
1uF
1uF
35V
50V
50V
BOOST
C816
BOOST
270pF
R814
50V
10
D
BOOST
R811
Q801
5.6
AOD478
G
BOOST
S
R810
1K
+24V_BLU
JP801
+24V_BLU
JP802
READY
R820
100
BLU_ON
JP803
BOOST
C821
READY
0.1uF
R822
4.7K
25V
JP804
PWM_DIM
READY
C820
1uF
10V
44A/45A/450A
DC BOOST UP
22/26 HD
P801
27.5 HD(NOT_HEESUNG)
SM14B-SRSS-TB
P802
20022WR-14A00
24V
1
1
24V
2
2
24V
3
3
24V
4
4
24V
5
5
GND
6
6
GND
7
7
GND
8
8
GND
9
9
GND
10
10
ERROR_OUT
11
11
INV_ON
12
12
NC
13
13
PWN_DIM
14
14
15
15
GND
2013/08/21
8
8
LGE Internal Use Only
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