LG IPS277 Schematics
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.
C147
1uF
10V
VA104
5.5V
ADUC 5S 02 0R5L
READY
5.6V
3.3V_AMP_ON
4.7K
R350
4.7K
R351
4.7K
EBC
1K
Q112
MMBT3904(NXP)
Top mask
2W
Large thermal PAD on bottom side
D123
C161
1uF
10V
READY
C113
4.7uF
10V
D124
READY
5.6V
5VS
R349
R353
22K
R352
C199
10V
1uF
S
ZXMP 3F30F HTA
G
Q113
D
C171
10V
1uF
A2CA1
R101
6.8
VOUT2
VIN1
VIN2
3
2
4
THERMAL
9
5
EN26GND_27GND_18EN1
1.2VS
3.3VS
3.3V-AMP
A2CA1
KDS184
D101
VOUT1
1
10V
4.7uF
10V
READY
5.6V
KDS184
APE8839AMP-C
IC103
[EP]GND
C160
1uF
READY
C114
D125
D100
2-Ch LDO
3.3VS
R105
TPS5433
C100
10uF
10V
C101
10uF
10V
READY
C102
10uF
10V
18K
100K
R104
TPS5433
15pF
C111
50V
4.7uH
TPS5433
Large thermal PAD on bottom side
TPS5433
R11501/10W
TPS5433
R120
0
TPS5433
C115
0.47uF
16V
5VS
TPS5433
L102
GND
4
3A
5
VFB6VREG57EN8SS
5%
1.2VS
R338
0
ADC_3.3V/TVCC
ADC_1.2V
AGND
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
PC6/MUTE/PWMB
PC0/PWMB67P35/LPD_OUT
AMP_MCL
AMP_MUTE
TGND
29
30
68
P3469PE0/PWMA/DBC
AMP_SCL
MP76
MP76
L105
UBW2012-121F
3.3VS
R341
0
5VS
R128
4.7K
R129
4.7K
C129 0.047uF
56
RED
5VS
WP_24C02
3.3VS
EA73
C136
C137
EA73
HP_DET
MODON
10V
R339
20K
4.7uF
15pF
15pF
C169
R130
R131 100
56
R133
R135
100
56
R137
R139 100
R140
R141
56
R143
56
R144
56
R145
50V
14.31818MHz
R146
X100
50V
PB0/INTE0/ADC0
1.2VS
C140
10uF
10V
HP_R_OUT
HP_L_OUT
EBC
Q111
MMBT3904(NXP)
C131 0.047uF
C132 0.047uF
C133 0.047uF
C134
C135
PB5/SDA0/TXD0
PB4/SCL0/RXD0
PC7/IR3/SPDIF
BLUE
GREEN
HSYNC
VSYNC
DSUB_SDA
DSUB_SCL
DSUB_DET
C136-*1
30pF
50V
R148
10K
C137-*1
30pF
50V
C138
0.1uF
16V
R150
20K
R152
10K
C139
16V
0.1uF
PC_R_IN
PC_L_IN
0.1uF
16V
C166
C142
4.7uF
10V
BIN+
BINGIN+
GINRIN+
0.047uF
RIN-
0.047uF
HSYNCI
56
VSYNCI/TOUTP
56
PC5/IR2/PWMD
OSC_VDD
READY
OSCO
1M
OSCI
OSC_GND/DGND
PB1/ADC1
PA3/PWMD
MVDD_3.3V_1
DVDD
RSTB
CVDD_1.2V_1
AUDIO_VDD
AUDIO_CEXT1
WD/AIN_R
I2S0/AIN_L
SCK/AOUT_R
MCLK/AOUT_L
AUDIO_VP
AUDIO_GND
R155
4.7K
NC
5VS
AMP_SDA
1
VIN2SW3FIX4SHIELD_1
JP105
UBW2012-121F
L100
68uF
105C
C174
35V
68uF
105C
35V
4.7uF
25V
D122
30V
4.7uF
25V
4.7uF
C107
25V
Close to IC
TPS5433
C170
0.1uF
25V
TPS5433
C110
0.1uF
16V
VIN
3SW2
THERMAL
9
TPS5433
C116
8200pF
25V
HDMI_RX2-
HDMI_RX2+
HDMI_RX1+
RX22-
RX22+
27
28
70
SPI_CE71SPI_SO72SPI_SI73SPI_CLK74LVDS_GND/DGND
WP_Flash
SPI_/CS
SPI_DO
R198
4.7K
3.3V-AMP
R199
4.7K
C159
C163
C164
VBST
1
HDMI_RX1-
RX21+
25
26
SPI_DI
RX21-
JP106
19VS
R110
100K
TPS54339EDDAR
IC102
TPS5433
[EP]GND
HDMI_RXC+
HDMI_RX0-
HDMI_RX0+
RX20-/MHL2-
RX20+/MHL2+
RX2C+
22
23
24
75
T7P76T7M77TCLK2P78TCLK2M79T6P80T6M81T5P82T5M83T4P84T4M85T3P86T3M87TCLK1P88TCLK1M89T2P90T2M91T1P92T1M93T0P94T0M95LVDS_3.3V
Y3P-A
SPI_CLK
One reflow
DS-262HB
JK100
3LX2
5FB6
COMP7EN8SS
8.2K 1%
APW7313
R120-*1
APW7313
19V to 5V DC/DC
50V
APW7313
APW7313
15K
3300pF
R104-*1
68K
R105-*1
C115-*1
AUDIO_IN_DET
HDMI/MHL_DET
HDMI_HPD
HDMI_SCL
HDMI_SDA
R122
HDMI_RXC-
RX2C-
21
56
R127
470
REXT
20
R12656R125
56
PA5/INTE3/CBUS2
PB7/SDA1/TXD1
PB6/SCL1/RXD1
PE3/CEC1
16
17
18
19
AMP_RST
PA1/ADC5/CD_SENS2
PC3/VBUS_CTRL2
14
15
NT68775
Not used EA85
Y3M-A
CLKOUTP-A
CLKOUTM-A
Y2P-A
Y2M-A
Y1P-A
Y1M-A
Y0P-A
VIN4GND
BS
APW7313KAITRG
1
IC102-*1
APW7313
THERMAL
9
Multi Option for APW7313(DC/DC)
[EP]GND
APW7313
C110-*1
0.01uF
25V
APW7313
C116-*1
0.1uF
16V
APW7313
L102-*-1
10uH
APW7313
R115-*1
1/10W 1%
100
LED_INDICATOR
MHL_RX2+
MHL_RX1+
MHL_RX0+
MHL_RX1-
MHL_RX0-
MHL_RX2-
PA0/ADC4/CD_SENS1
RX10+/MHL1+
RX11-
RX11+
RX12-
RX12+
8
9
10
11
12
13
IC100
CLKOUTP-B
Y0M-A
Y3P-B
Y3M-B
Y2P-B
CLKOUTM-B
Y2M-B
VA10 0
READY
VA10 1
VA10 2
MHL_RXC-
MHL_RXC+
56
RX10-/MHL1-
RX1C-
RX1C+
TVCC
4
5
6
7
Y1M-B
Y1P-B
Y0P-B
5
6
JP101
JP102
BLM18PG121SN1D
BLM18PG121SN1D
ADUC 20S 02 01 0L
L107
L106
20V
A
20S 02 0 10L
DUC
20V
ADUC 20S 02 01 0L
20V
68pF
C108
50V
C109
68pF
50V
KEY/SCL
KEY/SDA
EBC
R100
4.7K
4.7K
LED_INDICATOR
MHL_HPD
MHL_SDA
MHL_SCL
R123
R124
56
PA4/INTE2/CBUS1
PA7/SDA3/TXD3
PA6/SCL3/RXD3
1
2
3
128
THERMAL
127
129
126
125
124
123
122
121
120
119
118
117
116
115
114
113
112
111
110
109
108
107
106
105
104
103
102
101
100
99
98
97
96
BOOT
Y0M-B
C146
1uF
10V
D108
30V
BAT54
1
2
3
4
JP103
JP100
JP104
BLM18PG121SN1D
C106
0.1uF
16V
R109
4.7K
R113
4.7K
MMBT3904-(F)
Q100
R111
3.3VS
[EP]
PC2/VBUS_CTRL1
PA2/ADC6/CEC0
PB2/INTE1/ADC2
PB3/ADC3
PE2/PWMC
P30/RXD
P31/TXD
PC4/IR1/PWMC
PE1/LPDIN0/VSO
MVDD_3.3V_2
DGND
CVDD_1.2V_2
DVDD/LED_3.3V
R147
ISEN4
5.1
1/10W
VFB4
5%
VDET4
R149
ISEN3
5.1
1/10W
VFB3
5%
VDET3
R151
ISEN2
5.1
1/10W
VFB2
5%
VDET2
R153
ISEN1
5.1
1/10W
VFB1
5%
VDET1
FB
OVP
SENP
SENN
COMP
DRV
5VCC
4.7uF
C143
10V
ADUC 20S 02 01 0L
20V
VA10 3
R118
10
1.2VS
Top mask
SMAW200-06
P100
L101
LED Driver Apply 5V
R114
0
LED Driver apply 3.3V
R116
0
VCOM-SDA
R103
R132
56
56
56
56
56
1K
R154
1K
1uF
10V
C141
5VS
R158
8.2K
1%
C145
100pF
50V
OVP
S/W Control
Check!! Control wafer,LED Color
BUZZER_PWM
R107
1.8K
R112
1K
5VS 3.3VS
VCOM-SCL
4.7K
4.7K
R102
33
33
R134
Not used EA85
R136
R138
R354
BUZZER_PWM
5VS
R142
1.2VS
3.3VS
VFB4
VDT4
VFB3
VDT3
VFB2
VDT2
VFB1
VDT1
SENP
GND
DRV
Close to Scaler
EBC
Q102
MMBT3904(NXP)
Only used for LGD Panel Biz Model
V-com: R200,201,202,203
R106
3.3VS
R108
VBUS_CTR
ITL_Control
KEY/SCL
KEY/SDA
MHL_DET
HDMI_DET
3.3V_AMP_ON
BIN+
BINGIN+
GINRIN+
RIN-
HSYNCI
VSYNCI/TOUTP
PB5/SDA0/TXD0
PB4/SCL0/RXD0
PC5/IR2/PWMD
OSC_VDD
OSCO
OSCI
OSC_GND/DGND
PB0/INTE0/ADC0
PB1/ADC1
PA3/PWMD
NC
MVDD_3.3V_1
DVDD
RSTB
CVDD_1.2V_1
PC7/IR3/SPDIF
AUDIO_VDD
AUDIO_CEXT1
WD/AIN_R
I2S0/AIN_L
SCK/AOUT_R
MCLK/AOUT_L
AUDIO_VP
AUDIO_GND
1
2
ADC_3.3V/TVCC
ADC_1.2V
TGND
AGND
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
PC6/MUTE/PWMB66PC0/PWMB67P35/LPD_OUT68P3469PE0/PWMA/DBC70SPI_CE71SPI_SO72SPI_SI73SPI_CLK74LVDS_GND/DGND75T7P76T7M77TCLK2P78TCLK2M79T6P80T6M81T5P82T5M83T4P84T4M85T3P86T3M87TCLK1P88TCLK1M89T2P90T2M91T1P92T1M93T0P94T0M95LVDS_3.3V96BOOT
5VS
PKLCS1212E4001-R1
BU100
0.1uF
C117
16V
C118
0.1uF
16V
0.1uF
16V
C121
0.1uF
16V
0.1uF
16V
C125
0.1uF
16V
0.1uF
16V
C127
0.1uF
16V
0.1uF
16V
0.1uF
16V
PB7/SDA1/TXD1
PB6/SCL1/RXD1
PE3/CEC1
RX2C-22RX2C+23RX20-24RX20+25RX21-26RX21+27RX22-28RX22+
REXT
16
17
18
19
20
21
VFB4
VDT4
VFB3
VDT3
VFB2
VDT2
VFB1
VDT1
C119
C123
C126
C128
C130
PA5/INTE3
PC3
15
NT68773
EA85
3.3VS
0.1uF
C120
16V
0.1uF
C122
16V
0.1uF
C124
16V
PA0/ADC414PA1/ADC5
13
IC100-*1
Date : 2013.7.26
PCB P/N: EAX64914811 (LM13C)
1.2VS
PA7/SDA3/TXD3
PA6/SCL3/RXD3
PA4/INTE2
RX1C-6RX1C+7RX10-8RX10+9RX11-10RX11+11RX12-12RX12+
TVCC
1
2
3
4
5
128
THERMAL
127
129
126
125
124
123
122
121
120
119
118
117
116
115
114
113
112
111
110
109
108
107
106
105
104
103
102
101
100
99
98
97
READY
R156
4.7K
R157
1K
C144
1uF
10V
2N7002K
Q104
G
S
D
R159
1M
1/16W
1%
2N7002K
G
Q105
S
D
R160
1M
1/16W
1%
2N7002K
G
Q106
S
D
R161
1M
1/16W
1%
2N7002K
G
Q107
S
D
R162
1M
1/16W
1%
EA85 Scaler
[EP]
PC2
PA2/ADC6/CEC0
PB2/INTE1/ADC2
PB3/ADC3
PE2/PWMC
P30/RXD
P31/TXD
PC4/IR1/PWMC
PE1/LPDIN0/VSO
MVDD_3.3V_2
DGND
CVDD_1.2V_2
DVDD/LED_3.3V
ISEN4
VFB4
VDET4
ISEN3
VFB3
VDET3
ISEN2
VFB2
VDET2
ISEN1
VFB1
VDET1
FB
OVP
SENP
SENN
COMP
DRV
5VCC
5VS
FB4
FB3
FB2
FB1
LED DRIVE FB
EA73LM&MP7* 2013-07-26
SCALER
1
3
READY
22pF
50V
WP_Flash
R188
4.7K
GND
3WP2
4
5
DI[IO0]6CLK7HOLD8VCC
C157
R197
33
SPI_DI
SPI_CLK
DRV
10
G
AOD478
R121
100K
READY
50V
R169
Q109
1uF
FB1
JP129
6
D
READY
C104
100V
33uF
100V
33uF
-55TO+105C
7
R185
150K
1/16W
1%
R119
100K
50V
-55TO+105C
C155
C175
19VS
LED DRIVE CH
L104
33UH
D110
100V
BR210
READY
READY
C103
1uF
R163
100
R167
1
R170
R171
1
R172
1
R173
1
R174
1
1
R176
1
R177
R181
1
R184
1
1
12507WR-06L
12345
P101
FB4
JP132
SENP
FB3
JP131
R164
47K
R165
200
D109
30VBAT54
S
R186
150K
1/16W
1%
FB2
JP128
JP130
GND
R166
4.7K
READY
EBC
MMBT3904(NXP)
R355
0
READY
R178
22K
R179
READY
C148
10V
1uF
G
C151
10V
1uF
1000pF
C154
50V
R194
1K
10031HR-30
123456789
P102
5VS
READY
R356
1K
Q114
READY
S
ZXMP 3F30F HTA
Q110
D
For ITL Contorl Module
For Non ITL Control Module
VCOM-SDA
VCOM-SCL
R357
100
R358
0
JP134
JP135
JP127
ITL_Control
For ITL Control Module
R359
4.7K
3.3VS
5VS
CLKOUTM-A
CLKOUTP-A
Y2P-A
Y2M-A
Y3P-A
JP126
Y3M-A
JP125
10
Y1P-A
Y0M-A
Y1M-A
Y0P-A
JP120
JP122
JP121
JP124
11121314151617181920212223242526272829
JP119
JP118
JP117
JP116
Y3P-B
JP115
Y3M-B
JP114
CLKOUTP-B
CLKOUTM-B
JP112
JP113
Y2P-B
JP111
Y2M-B
JP110
Y1P-B
JP109
Y1M-B
JP108
Y0P-B
JP107
Y0M-B
JP123
30
LVDS OUT
JP133
31
MODON
SPI_/CS
SPI_DO
4M Serial Flash
R180
4.7K
R117
33
R18233R183
33
4.7K
R187
READY
DO[IO1]
CS
W25X40CLSNIG
1
IC101
4.7K
R175
R168
4.7K
EBC
MMBT3904(NXP)
2.7K
Q108
10V
1uF
C150
R195
R196
33
10K
0.1uF
16V
3.3VS
C158
OVP
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