LG Electronics 32LA62**-Z* DVB-S2 LNB Part Allegro, OptionLNB, 2012.03.08, Max 1.3A, IC6900

DVB-S2 LNB Part Allegro

(Option:LNB)

+12V

2A

D6904-*1

40V LNB_SX34

D6902		3.5A
LNB	D6904

	Input trace widths should be sized to conduct at least 3A
3A	Ouput trace widths should be sized to conduct at least 2A

Max 1.3A

30V						40V
						LNB_SMAB34
C6903		C6905		C6906	C6907
0.01uF		10uF		10uF	10uF
50V		25V		25V	25V
LNB		LNB		LNB	LNB
					C69080.1uF
	close to Boost		pin(#1)
						LNB

A_GND

7850 15	15uH L6900	LNB
SP-

C6909

10uF

25V LNB

A_GND

close to VIN pin(#15) Caution!! need isolated GND

A_GND [EP]GND

BOOST

NC 3 NC 2

GNDLX

LX

C6910

0.1uF

50V

R6904

0

LNB_OUT

C6900		C6901
18pF		33pF	D6900
LNB		LNB
				LNB
Close	to Tuner
Surge	protectioin

	D6901
MBR230LSFT1G
		30V		C6904	D6903
	LNB
R6900				0.1uF	LNB_SMAB34
					40V
			LNB	50V
2.2K
1W	C6902
LNB	0.22uF
LNB	25V				D6903-*1
					LNB_SX34
					40V
A_GND				A_GND

VCP

LNB

NC_1

TDI

TDO

20	19	18	17		16	VIN
1					15
THERMAL						GND
2	21				14
3	IC6900				13	VREG
A8303SESTR4				-T12 ISET
		LNB				TCAP
5					11
6	7	8	9		10
IRQ	SCL	SDA	ADD		TONECTRL

LNB

A_GND

LNB

R6903

39K

C6912	1/16W
	1%

LNB 0.1uF

0.22uF
C6911	LNB

LNB R6901 33	R6902 33	LNB
I2C SCL4	I2C SDA4	LNB TX

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.

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Only for training and service purposes

LNB 2012.03.08

69

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