LG 55X6500-TD Service Manual page 45

MAIN 3.3V & 3.3V IO POWER
VLCD_POWER
L301
IC301
120-ohm MP8706EN-C247-LF-Z
IN GND
1 8
C308
1uF C311
SW_1 VCC
2 7 50V 100pF
C301 50V
22uF
SW_2 FB
25V
3 6
C302
VLCD_POWER
0.1uF
BST EN/SYNC
4 5
R307
R301
100K
22
C309
R306
0.47uF
39K
50V
OPT
L305
3.6uH
4.9A
1.0V DIGITAL CORE POWER
+3.3V
L303
120-ohm
R305
100K
IC302
MP2212DN
C304 R302
100pF
3K
1%
R1 FB EN/SYNC
1 8
R303
Vout= 0.8*(1+R1/R2) 9.1K
1% GND SW_2
2 7
R2
IN SW_1
3 6
BS VCC
C303 C306
4 5
22uF 10uF
16V 6.3V
OPT
R304
10
1%
VLCD_POWER
(+12V)
IC303
BCD_REGULATOR
AOZ1072AI
L315
PGND LX_2
CIC21J501NE
1 8
BCD_REGULATOR
VIN LX_1
2 7
C380
2A BCD_REGULATOR
0.1uF
AGND EN
BCD_REGULATOR
3 6
C378 C379
BCD_REGULATOR
10uF 10uF
FB DEV COMP
25V 25V 4 5
BCD_REGULATOR
12K
BCD_REGULATOR
R339
EAN60922901
BCD_REGULATOR
Vout=0.8*(1+R1/R2)
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright © 2010 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
DDR2 SDRAM SOURCE POWER for FRC
VLCD_POWER
(+12V)
+3.3V
L304
120-ohm
Vout= 0.8*(1+R1/R2)
R308
39K
C377 C374 C317
1%
22uF 22uF 22uF
R1
OPT 16V 16V 16V
R309
(+12V) 12.4K
1%
R2
C314
0.01uF
50V
+1.0VDC
L306
3.6uH
NR8040T3R6N
C316 C318
C319
C315 22uF 22uF 0.1uF
0.1uF 16V 16V
16V
50V
C312
1uF
10V
1.2V FPGA CORE POWER
MAX 350mA
+5V_NORMAL
L316
3.6uH
BCD_REGULATOR
NR8040T3R6N
VLCD_POWER
(+12V)
BCD_REGULATOR
BCD_REGULATOR
BCD_REGULATOR
C382 C383 C385
R1
22uF 22uF 0.1uF
10V 10V 16V
BCD_REGULATOR
BCD_REGULATOR
OPT
C381 C384
2200pF 100pF
50V
BCD_REGULATOR
R2
BCD_REGULATOR
C330
C334
1uF
25V 0.1uF
50V
C320
10uF
25V
LX_1
PGOOD
22 15
LX_2
20
R310
LX_3
100K EN/PSV
25 21
LX_4 R320 C338
P3 8.2K
0.1uF
IC304 50V
ENL
28
SC424MLTRT
LXBST
12
LXS
FB
1 24
ILIM
23
C325
TON
0.1uF 27
16V
BST
7
R318
100K
DDR2 SDRAM SOURCE POWER for FPGA
VLCD_POWER
L310 IC310
120-ohm MP8706EN-C247-LF-Z
Vout= 0.8*(1+R1/R2)
IN GND
1 8
C335
C339
1uF
SW_1 VCC
2 7 50V 100pF
C321 50V
OPT
22uF
SW_2 FB
25V
3 6
C326
VLCD_POWER
0.1uF
BST EN/SYNC
4 5 (+12V)
R321
R311
100K
22
C337
R319
0.47uF
39K
50V
L314
3.6uH
4.9A
+3.3V Vout= 0.8*(1+R1/R2)
L308
120-ohm
R314
100K
C327 100pF
R312 R313 R317
10K 0 5.1K
IC305
MP2212DN
FB EN/SYNC
1 8
L309
3.6uH
GND SW_2
2 7
IN SW_1
3 6
OPT
C322 C323 C324
22uF 0.1uF 22uF BS VCC
4 5
16V 50V 16V
OPT
D302
R315
1N4148W_DIODES
10
100V C328
R316 0.1uF
10
C329
1uF
25V
+2.5VQ +5V_NORMAL
L317
120-ohm
BCD_REGULATOR
R347
1K
BCD_REGULATOR
C386
10uF C387
0.1uF
16V
VLCD_POWER
(+12V)
+2.5VQ
L307
3.3uH
4.1A
OPT
C371 C372 C373
R334 C368
0.01uF 22uF 22uF 22uF
39K
16V 16V 16V
OPT OPT
OPT
+2.5VQ +5V_NORMAL
C340 C369
R335
1000pF 10K 100pF
OPT 1%
50V
L318
R1
120-ohm
BCD_REGULATOR
R355
1K
BCD_REGULATOR
C392
10uF C393
0.1uF
16V
R338
4.3K
1%
R2
VLCD_POWER
(+12V)
OPT
OPT
2V5
VOUT=0.6*(R1+R2)/R2
C375 C376 C370
R336
10K 22uF 22uF 22uF
1%
16V 16V 16V
R1
2V5
+5V_NORMAL
R337
4.7K
1%
L319
R2
120-ohm
BCD_REGULATOR
R364
0
BCD_REGULATOR
C398
10uF C399
0.1uF
16V
VLCD_POWER
(+12V)
OPT
OPT
C332
0.47uF
50V 1.8V FPGA DDR SDRAM VTT & VREF
DDR_VTT
1V2
C310 C305 C307
22uF 22uF 22uF
16V 16V 16V
OPT
C331 C333 C336
22uF 0.1uF 22uF
16V 50V 16V
OPT
DDR_VREF0
C343
0.1uF
DDR_VREF1
16V
C342
0.1uF
16V
+1.8V_DDR
IC307
AP2132MP-2.5TRG1
[EP]
VOUT : 1.8
R348
PG GND
10K
1 8
R351-*1
BCD
12K
BCD
R351
1%
R349 15K R2 SEMTECH
EN ADJ R2
91K
2 7
R352-*1
SEMTECH
R352 15K
R1 1%
30K
SEMTECH
VIN VOUT
BCD R1
3 6
IC307-*1 SEMTECH
SC4215ISTRT
NC_1 1 8 GND
R350 VCTRL NC
EN 2 7 ADJ
4 5 C390
VIN 3 6 VO C389
NC_2 NC_3
4 5
0 10uF
10uF
BCD
16V
16V
C388
2.2uF BCD
16V
1.8V DDR SDRAM POWER
+1.8V_DDRS
IC308
AP2132MP-2.5TRG1
[EP]
VOUT : 1.8
R357
PG GND
10K
1 8
R360-*1
BCD
12K
BCD
R360
1%
R358 15K R2 SEMTECH
EN ADJ R2
100K
2 7
R361-*1
SEMTECH
R361 15K
30K R1 1%
SEMTECH
VIN VOUT
BCD R1
3 6
SEMTECH IC308-*1
SC4215ISTRT
NC_1 GND
1 8
EN 2 7 ADJ
R359 VCTRL NC
VIN 3 6 VO
4 5 C396
NC_2 NC_3 C395
4 5
0
10uF 10uF
BCD
16V
16V
C394
2.2uF BCD
16V
VOUT=0.6*(R1+R2)/R2
1V8
IC306
AP2132MP-2.5TRG1
[EP]
VOUT : 1.8
R366
10K PG GND
1 8
R369-*1
BCD
12K
BCD
R369 1%
R367 15K R2 SEMTECH
EN ADJ R2
91K
2 7
R370-*1
SEMTECH
R370 15K
R1 1%
30K
VIN VOUT SEMTECH
BCD
R1
3 6
IC306-*1 SEMTECH
SC4215ISTRT
NC_1 GND
1 8
R368 VCTRL NC
EN 2 7 ADJ
4 5 C3003
VIN 3 6 VO C3002
NC_2 NC_3
4 5 C3004
0 10uF
10uF
BCD 0.1uF
16V 16V
C3001
BCD
0.22uF
50V
1.8V FPGA DDR SDRAM POWER
IC309
C344 C347
BD35331F-E2
10uF 0.1uF
1V8
16V 16V
GND VTT
1 8
EN VTT_IN
2 7
VTTS VCC
3 6
L311
R329
BLM18PG121SN1D
VREF VDDQ
220
4 5
OPT
C363
C359
C346 C351 C358
10uF 2.2uF
0.1uF 0.1uF 0.1uF
25V 10V
16V 16V 16V
L312
BLM18PG121SN1D
C345
0.1uF
16V
3D + 240 FRC + TCON BOARD 2009. 11. 13
FRC & FPGA Power Block
3
LGE Internal Use Only
C391
0.1uF
C397
0.1uF
+3.3V
C367
0.1uF
16V
10