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DVB-S2 LNB Part_Allegro
S
D1600
D1603
SMAB34
SMAB34 S
40V
40V
S
S
2A
S
S
C1601
C1606
C1623
C1604
1uF
68uF
68uF
0.01uF
50V
35V
35V
50V
close to Boost pin(#1)
DCDC_GND
DCDC_GND
D1601
US1M(suzhou)
LNB_OUT
S
1000V
D1602
S
C1602
SMAB34
0.1uF
40V
C1600
50V
0.22uF
S
25V
A_GND
A_GND
A_GND
BOOST
1
THERMAL
C1603
VCP
2
29
0.1uF
C1605
TCAP
3
22000pF
NC_1
4
A8290SETTR-T
TDO
5
A_GND
EXTM
6
LNB_TX
TDI
7
R1604
R1605
0 S
0 S
A_GND
DCDC_GND
A_GND
A_GND
P_17V
17V->12V
S
C1617
0.1uF
50V
BOOT
VIN
-->3.12V
EN
S
S
S
C1612
C1613
C1614
4.7uF
4.7uF
0.01uF
SS
50V
50V
50V
S
C1616
0.01uF
25V
R1606
POWER_ON/OFF_2
10K
OPT
0.1uF
50V
C1615
Vout=0.8*(1+R1/R2)
OPT
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 © 2011 LG Electronics Inc. All rights reserved.
Only for training and service purposes
3A
+12V_LNB
L1600
S
33UH
C1611
SP-7850_33
C1610
10uF
0.1uF
2.4A
S
50V
25V
close to VIN pin(#25)
DCDC_GND
A_GND
DCDC_GND and A_GND are connected
DCDC_GND and A_GND are connected in pin#27
PCB_GND and A_GND are connected
NC_8
21
NC_7
20
BFC
19
IC1600
NC_6
18
NC_5
S
17
A_GND
NC_4
16
NC_3
15
+3.3V_Normal
S
R1603
4.7K
S
S
S
+12V_LNB
Max 1.3A
S
R1613
0
L1601
22.0uH
EAP61606601
IC1601
S
TPS54231D
S
S
C1622
R1
C1619
C1620
10uF
10uF
10uF
25V
PH
16V
16V
1
8
OPT
GND
2
7
S
COMP
R1611
3
6
6.8K
1%
S
R2
VSENSE
R1612
C1618
4
5
470pF
1.6K
1%
50V
S
C1621
15pF
50V
S
R1609
51K
*NOTE 13
EAX64029301
LNB
16
19
LGE Internal Use Only
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