LG Electronics 42LT640H-ZA From Lips & Power B/D, +1.5VDDR, +3.3VNormal, PowerDET, +2.5V/+1.8V

FROM LIPS & POWER B/D

+3.5V_ST

MMBT3906(NXP)

+3.5V_ST

Q402

OPT

R406

1

3

R461

4.7K

L407-*1

10K

C

2

R401

NORMAL_EXPEPT_32

NORMAL_32

MLB-201209-0120P-N2

10K

B

Q401

OPT

P403

P404

RL_ON

FW20020-24S

FM20020-24

MMBT3904(NXP) R417

BEAD_MAG

+24V

R462

33K

E

10K

L407

PWR ON

1

2

24V

CIS21J121

L404-*1

24V

24V

+3.5V_ST

3

4

MLB-201209-0120P-N2

GND

GND

OPT

5

6

BEAD_SSC418

L404

GND

GND

C426

CIS21J121

BEAD_MAG

7

8

0 . 1uF

68uF

3.5V

3.5V

9

10

50V

35V

OPT

BEAD_SS

C408

3.5V

11

12

3.5V

C401

100uF

C406

0 . 1uF

GND

13

14

GND

16V

0 . 1uF

16V

GND

15

16

GND/V-sync

16V

OPT

12V

INV ON

+3.3V_Normal

17

18

+12V/+15V

12V

19

20

A.DIM

BEAD_SS

12V

P.DIM1

R419

21

22

+3.5V_ST

L402

1K

GND/P.DIM2

23

24

Err OUT

R415

CIS21J121

POWER16 GND

100

OPT

R412 0

R426

C404

C407

C402

25

C

10K

100uF

0 . 1 u F

0 . 1 u F

R418

R421

16V

16V

16V

6.8K

OPT

B

10K

R476 0

OPT

E MMBT3904(NXP)

OPT

SLIM_32~52

INV_CTL

BEAD_MAG

P401

Q405

R427

L402-*1

SMAW200-H24S2

10K

MLB-201209-0120P-N2

OPT

OPT

R475 0

A_DIM

R471	0						PWM_DIM
		OPT
				PWM_PULL-DOWN_3.9K
		C416			R414
		0 . 1uF			3.9K
		16V				R414-*1
						1K
					PWM_PULL-DOWN_1K
			+3.3V_Normal
					OPT
ERROR_OUT					R486
					4.7K
R420	100					ERROR_OUT

’ERROR _ OUT’ is used for lamp(CCFL/EEFL) models.

I n o t h e r w o r d s , LED models need not use .

+12V/+15V						PANEL_POWER
L412
	0 . 015uF	0 . 01uF	C438	C442
	C409
		C436	0 . 1uF	10uF	New item
	0 . 015uF
		0 . 01uF	16V	16V
	50V	50V
				OPT	Q409
					AO3407A
					S	D
				C443					PANEL_VCC
			R439
				10uF
			33K		G
				25V
	R431
	22K					C451		OPT	OPT
						0 . 1 u F	C455
			R440			OPT	0 . 1uF	R405	R407
			5.6K				16V	2.2K	2.2K
OPT				C
R430
10K			B	Q407
	C			MMBT3904(NXP)
R429								R405-*1
			R435	E
47K B	Q406							3K	R407-*1
			22K
PANEL_CTL	MMBT3904(NXP)
1:AK10							PANEL_DISCHARGE_RES		3K

R489	E							PANEL_DISCHARGE_RES
10K
OPT
+1.5V_DDR								Max 1000mA
+3.5V_ST			IC407
		AP7173-SPG-13 HF(DIODES)						+1.5V_DDR
L420					[EP]
BLM18PG121SN1D
		IN		8	OUT
		1					R1
			THERMAL 9					C472
		PG			FB		R457		C476
				7			4.3K	22uF	0 . 1uF
		2
							1/16W	10V	16V
		VCC			SS		1%
		3		6
	+3.3V_Normal		1.5A			C467	R2
	R433	EN			GND
	10K					560pF	R456
C461		4		5		50V	4.7K
10uF							1/16W
10V	C475						1%
	0 . 1uF
	16V
		Vout=0 . 8*(1+R1/R2)=1 . 5319

ST _ 3 . 5V -- > 3 . 375V -- > 3 . 46V

+12V/+15V

12V -- >3 . 58V -- > 3 . 82V (3 . 68V)

+3.5V_ST

20V -- >3 . 51V -- > 3 . 76V (3 . 59V)

R488

+3.5V_ST

100K

24V -- >3 . 78V -- > 3 . 92V (3 . 79V)

R448

2.7K

+12VPD

R450

+3.5VPD 5%

1%

0

IC408

R463

APX803D29

10K

R402

OPT

POWER_DET

VCC

3

2

RESET

100

C411

1.21K

1/10W

+12VPD

1

0 . 1uF

R447

1%

C474

IC408-*1

16V

GND

PWR_DET_ON_SEMI

0 . 1 u F

APX803D29

VCC

PD_+24V

RESET

2

3

R404

1

+24V

100K

GND

PD_+24V_PWR_DET_ON_SEMI

PWR_DET_ON_DIODES

IC409

R482

8.2K

APX803D29

PD_+24V

IC409 - *1

1%

PD_+24V

APX803D29

R480

VCC

3

2

RESET

100

C412

R403

1.5K

1

RESET

2

3

VCC

PD_+24V

1%

1

0 . 1uF

GND

16V

GND

PD_+24V

PD_+24V_PWR_DET_DIODES

+3.3V_Normal

Power_DET

780 mA

+3.5V_ST

+3.3V_Normal

FET_AOS

Q403

L403

AO3407A

BLM18PG121SN1D

S

D

C435

R438

4 . 7uF

G

0 . 1uF

10K

0 . 1uF

22uF

0 . 1uF

C423

C425

R446

C445

C437

16V

R434

22K

16V

16V

OPT

16V

10V

FET_AOS

OPT

10K

FET_2.5V

FET_AOS

C423-*1

2 . 2uF

R445

10V

FET_2.5V_DIODE

FET_2.5V_AOS

100

FET_2.5V

DMP2130L

AO3435

Q403-*1

Q403-*2

R445-*1

R443

C

2.2K

S

D

S

D

POWER_ON/OFF_1

10K

B

Q400

MMBT3904(NXP)

OPT

E

G

G

R490

10K

FOR LPB Download

[To LED DRIVER]

+2.5V/+1.8V
+3.3V_Normal
				IC402					+2.5V_Normal
			TJ3940S-2.5V-3L
		VIN					VOUT
				3Vd=550mV		2					300 mA
	C432			1				R473
	0 . 1uF				GND		1
	16V
								C403		C440
								10uF		0 . 1 u F
								10V		16V

FOR LPB MODEL

P405 12507WR-08L

1

2

3

4

5

6

7

8

FOR LPB MODEL

R408

33

EEPROM_SCL

EEPROM_SDA

FOR LPB MODEL

R409

33

+12V/+15V		+5V_USB
L401	+3.3V_Normal
						2000 mA
C405
10uF
25V				IC401
			TPS54327DDAR [EP]GND
		R410	EN		VIN		+5V_Normal
		10K					+5V_USB
R1			1		8
				THERMAL 9	C413
R416	R411
			VFB		0 . 1uF
56K	11K				VBST
			2		7
1%	1%				50V	L406	L425
C489			VREG5		SW	3.6uH	BLM18PG121SN1D
				3A
100pF			3		6
						NR8040T3R6N	C492
			SS		GND	C420
	R423					22uF	22uF
			4		5
	12K	C494	C493			16V	16V
	1%						OPT
		1uF	3300pF
R2
		10V	50V
Vout=(1+R1/R2)*0.765=5.03V

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.

S7LR core 1 . 2V volt

+3.3V_Normal

10K

C447

R428

0 . 1uF

C441

+3.5V_ST

16V

0 . 1uF

EP[GND]

3VIN

EN

PWRGD

BOOT

16V

+1.10V_VDDC

L413

16

15

14

13

L415

VIN_1

12

PH_3

3.6uH

1

VIN_2

THERMAL

PH_2

NR8040T3R6N

C444

C430

C431

2

17

11

C453

C456

0 . 1uF

10uF

0 . 1uF

GND_1

PH_1

R413

3

IC403

10

22uF

22uF

16V

10V

16V

0

10V

10V

GND_2

TPS54319TRE

SS/TR

C488

4

9

R400

3300pF

0

5

6

7

8

FB_CORE

OPT

AGND

VSENSE

COMP

RT/CLK

R1

1%

50V

R442

R432

27K

100pF

1/16W

330K

5%

1/16W

C439

R436

C448

15K

3300pF

50V

R2

R441

4A

$ 0 . 165

56K

1/16W

1%

Vout=0.827*(1+R1/R2)=1.225V

9

OLP

Not used :

only for small(ready)

EMEA INTERACTIVE

GP4_MSTAR	2011 . 08 . 21
POWER_LARGE	4	2 0

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