THERMAL
THERMAL
THERMAL
THERMAL
THERMAL
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.
R2333
22
RL_ON
POWER_ON/OFF2_2
C2308
100pF
50V
PWM_DIM2
L2308
2.2uH
NR5040T2R2N
R2351
100K
1/16W
5%
PANEL_CTL
IC2300
BD9D320EFJ
DCDC_ROHM
3
VREG
2
FB
4
SS
1
EN
5
GND
6
SW
7
BOOT
8
VIN
9
[EP]FIN
R2309
100
R2337
100K
R2325
2.7K
1%
PD_+12V
ZD2302
5V
OPT
R2305
3.6K
1%
C2362
0.1uF
16V
PWR_DET_SEPARATE
C2313
1uF
10V
3.3V_EMMC
IC2300-*1
TPS54327DDAR
DCDC_TI
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
+5V_NORMAL
IC2308-*1
APX803D29
PD_20_24V_DIODES
1
GND
3
VCC
2
RESET
POWER_DET_1
C2353
22uF
L2307
2.2uH
NR5040T2R2N
C2357
10uF
16V
C2336
10uF
25V
OPT
POWER_ON/OFF1
C2347
82pF
50V
C2315
2200pF
50V
1.0V_DCDC_ROHM
+3.5V_ST
C2349
1uF
10V
C2374
1uF
10V
R2357
3.3
1/10W
5%
C2310
1uF
10V
R2327-*2
9.1K
1%
PD_UHD_24V
R2318
10K
R2300
10K
R2317
10K
R2356
1K
C2330
0.01uF
50V
R2342
1.5K
/USB_OCD3
R2330
0
5%
PD_+3.5V
+3.3V_NORMAL
C2342
10uF
10V
PANEL_VCC
C2375
10uF
16V
L2315
UBW2012-121F
/USB_OCD2
C2331
10uF
25V
R
2
3
4
8
1
5
0
K
1
%
+12V
C2322
0.1uF
25V
R2306
33K
1%
R2352
6.8K
1/16W
1%
+24V
+12V
R2363
5.1K
1/16W
1%
+3.3V_NORMAL
Q2303
2SC3052
E
B
C
C2333
10uF
25V
C2366
22uF
IC2304
SN1302001(TPS65286RHDR)
1
VIN_1
3
VIN_3
7
V7V
9
EN
10
SW_OUT2
11
SW_OUT1
12
SW_EN2
13
SW_EN1
14
NFAULT2
15
NFAULT1
16
SW_IN1
17
SW_IN2
18
BST
19
LX_1
20
LX_2
21
LX_3
22
SS
23
FB
24
COMP
25
RLIM
26
RSET1
27
RSET2
28
AGND
5
PGND_2
8
MODE/SYNC
6
PGND_3
4
PGND_1
2
VIN_2
29
[EP]
R2332
2K
OPT
IC2302
AP2132MP-2.5TRG1
EAN61387601
3
VIN
2
EN
4
VCTRL
1
PG
5
NC
6
VOUT
7
ADJ
8
GND
9
[EP]
R2316
0
PWR_DET_SEPARATE
C2312
2200pF
50V
1.0V_DCDC_ROHM
+12V
PWM_DIM
R2313
10K
IC2303-*1
TPS54327DDAR
DCDC_TI
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
C2317
1 0uF
25V
OPT
C2338
2200pF
50V
L2301
BLM18PG121SN1D
+3.5V_ST
R2327-*1
5.6K
1%
PD_20V
POWER_ON/OFF2_3
C2314
0.1uF
16V
C2371
470pF
50V
Q2301
2SC3052
E
B
C
C2315-*1
3300pF
50V
1.0V_DCDC_TI
C2354
10uF
16V
C2316
0.1uF
50V
R2304
10K
USB_CTL3
+12V
+12V
R
2
3
6
0
2
7
K
1
/
1
6
W
1
%
R2307
22K
1%
C2339
0.1uF
25V
C2327
0.1uF
16V
IC2307-*1
APX803D29
RESET_IC_DIODES
1
GND
3
VCC
2
RESET
R2350
0
C2372
0.1uF
16V
R2343
0
1/16W
5%
L2302
BLM18PG121SN1D
R2355
2K
1/16W
5%
IC2308
BD48K28G
PD_20_24V_ROHM
1
GND
2
VOUT
3
VDD
P13002
SMAW200-H24S5
19
24V
14
12V
9
GND
4
PDIM#2
18
24V
13
12V
8
3.5V
3
PDIM#1
17
GND
12
12V
7
3.5V
2
INV CTL
16
GND
11
12V
6
GND
1
PWR ON
20
24V
15
12V
10
GND
5
3.5V
21
24V
22
24V
23
GND
24
GND
25
R2314
0
OPT
R2345
10K
+12V
C2300
22uF
10V
C2340
22uF
10V
POWER_ON/OFF2_4
R2329
2K
OPT
R2353
51K
1/16W
1%
+12V
R2327
8.2K
1%
PD_24V
ZD2303
2.5V
OPT
C2301
10uF
16V
C2346
0.047uF
25V
R2326
1.2K
1%
PD_+12V
R2346
11K
R2336
100K
PD_20_24V
C2335
0.0068uF
50V
C2312-*1
3300pF
50V
1.0V_DCDC_TI
R2315
0
PWR_DET_MERGE
R
2
3
2
2
3
.
9
K
+5V_NORMAL
C2302
10uF
16V
R2324
1.8K
POWER_ON/OFF2_3
L2321
1uH
C2350
10uF
C2337
1uF
+24V
C2359
0.1uF
R2302
11K
1%
C2309
10uF
35V
OPT
R2321
1.2K
C2344
0.047uF
25V
C2356
0.1uF
16V
PD_20_24V
C2334
10uF
25V
OPT
C2343
100pF
50V
OPT
R
2
3
6
1
9
1
K
1
/
1
6
W
1
%
C2352
10uF
16V
L2303
UBW2012-121F
L2314
MLB-201209-0120P-N2
+5V_USB_3
C2320
22uF
10V
C2348
22uF
10V
C2373
2200pF
50V
IC2309
TPS53513RVER
1
RF
3
EN
7
SW_2
9
SW_4
10
PGND_1
11
PGND_2
12
PGND_3
13
PGND_4
14
PGND_5
15
VIN_1
16
VIN_2
17
VIN_3
18
NC_2
19
VDD
20
VREG
21
MODE
22
GND
23
FB
24
VO
25
TRIP
26
NC_3
27
GND1
28
GND2
5
NC_1
8
SW_3
6
SW_1
4
VBST
2
PGOOD
29
[EP]
C2360
0.1uF
ZD2300
2.5V
OPT
+3.3V_NORMAL
L2300
BLM18PG121SN1D
R2341
10K
+3.5V_ST
C2329
0.1uF
50V
R2349
10K
+1.2V_VDD
C2306
0.1uF
50V
L2310
120-ohm
C2318
0.1uF
16V
C2376
10uF
16V
IC2307
BD48K28G
RESET_IC_ROHM
1
GND
2
VOUT
3
VDD
C2369
0.1uF
16V
R
2
3
4
4
1
6
K
1
%
C2351
22uF
10V
+2.5V_Normal
+24V
C2311
10uF
35V
C2365
0.1uF
16V
R2359
10K
Q2300
MMBT3906(NXP)
1
2
3
R2362
39K
1/16W
5%
+3.3V_NORMAL
R2301
10K
R2354
100K
1/16W
5%
R
2
3
4
7
1
6
K
1
%
C2321
22uF
10V
C2305
0.1uF
16V
R2365
20K
1/16W
1%
L2312
UBW2012-121F
LD2300
INV_CTL
R2310
1K
R2338
10K
OPT
L2313
MLB-201209-0120P-N2
R2328
1.5K
1%
PD_24V
R2328-*1
1.3K
1%
PD_20V
+1.0V_VDD
C2361
22uF
POWER_DET
C2303
100pF
50V
L2306
UBW2012-121F
ZD2304
2.5V
OPT
+3.5V_ST
C2358
22uF
10V
+5V_USB_2
L2322
R2312
10K
+1.5V_DDR
IC2303
BD9D320EFJ
DCDC_ROHM
3
VREG
2
FB
4
SS
1
EN
5
GND
6
SW
7
BOOT
8
VIN
9
[EP]FIN
C
2
3
2
4
1
u
F
2
5
V
L2304
UBW2012-121F
USB_CTL2
R2358
4.7
R2328-*2
1.6K
1%
PD_UHD_24V
C2355
0.1uF
16V
0.1uF
C2341
C2307
0.1uF
16V
Q2302
AO4423
AO4423
3
S3
2
S2
4
G
1
S1
5
D1
6
D2
7
D3
8
D4
+3.5V_ST
R2303
18K
1%
C2370
1000pF
50V
R2364
4.87K
1/16W
1%
L2311
4.7uH
Q2302-*1
AO4447A
AO4447
3
S_3
2
S_2
4
G
1
S_1
5
D_1
6
D_2
7
D_3
8
D_4
D2301
30V
R2368
100
1/16W
1%
POWER
2013-12-17
BSD-14Y-UD-023-HD
LG1154AN : 3.3V->2.5V->1.0V
R2
else : Max 0.7A
LG1154D : 3.3V->2.5V->1.5V->1.1V
Main +1.5V
2A
eMMC POWER
Vout=0.6*(1+R1/R2)
5V/3.3V->2.5V->1.5V/1.1V->1.0V
Vout=0.6*(1+R1/R2)=5.1V
3A
Vout=0.765*(1+R1/R2)
R2
ST_3.5V-->3.5V
POWER UP SEQUENCE
R1
+1.0V_VDD
R1
24V-->3.48V
LG1154A
6A
not to RESET
at 8kV ESD
R2
’14 UHD POWER
+5.0V normal & USB
12V-->3.58V
+1.2V_CORE
20V-->3.51V
Power_DET
R2
PANEL_POWER
R1
Vout=0.6*(1+R1/R2)
TYP 6000mA
R1
+2.5V
8A
T2 : Max 1.7A
3A
R2
Vout=0.765*(1+R1/R2)=1.516V
R1
Copyright © 2014 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only
Summary of Contents for 79UB980T
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