LG 42LT760H-SA (CHASSIS:LJ3AZ) Service Manual ▷ View online
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.
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.
1K
OPT
R8445
EPHY_RDP
TR0N
EPHY_TDN
4 9 . 9
R8417
LAN2_HUB
0 . 1 u F
C8426
1K
OPT
R8446
1K
OPT
R8452
0 . 1 u F
C8411
P4MODE0
470
R8459
OPT
LAN_ACT0
1K
OPT
R8464
LAN_ACT3
ETNHUB_AVDD33
PHY2PRXD3
2 . 2 u F
25V
25V
C8430
4 9 . 9
1%
1%
R8411
GXFULL
2SC3052
Q8401
E
B
C
EN_AUTOXOVER
0 . 1 u F
C8407
AUTO_NEGO
0 . 1 u F
C8429
0 . 1 u F
C8415
0 . 1 u F
C8413
1K
OPT
R8448
10K
R8409
EPHY_RDN
0 . 1 u F
C8412
ETNHUB_EPHY_RXIP2
EPHY_ACTIVITY
10K
R8407
330
R8432
LAN2_HUB
0 . 1 u F
16V
C8435
0 . 1 u F
C8436
4 9 . 9
R8419
LAN2_HUB
BLM18PG121SN1D
L8406
0 . 1 u F
C8422
0 . 1 u F
C8445
LAN2_HUB
GYFULL
ETNHUB_EPHY_TXON2
4 9 . 9
1%
1%
R8413
0 . 1 u F
16V
C8419
LAN_ACT2
1K
R8444
OPT
0 . 1 u F
C8417
+3.5V_ST
ETNHUB_EPHY_RXIN3
ETNHUB_AVDD18
P4MODE1
0 . 1 u F
C8406
10K OPT
R8471
BLM18PG121SN1D
L8403
2K
R8406
EPHY_LINK
ETNHUB_EPHY_RXIP3
2 . 2 u F
25V
25V
C8400
0 . 1 u F
C8433
THERMAL
MP20045DQ-LF-Z
IC8400
3
VOUT_1
2
VIN_2
4
VOUT_2
1
VIN_1
5
FB
6
GND
7
PG
8
EN
9
EP[GND]
0 . 1 u F
C8421
LD8400
OPT
A2[RD]
C
A1[GN]
330
R8431
1K
OPT
R8450
0 . 1 u F
C8424
ETNHUB_AVDD33
TR0P
GXSPD
GXMODE
ETNHUB_EPHY_RXIN2
0 . 1 u F
C8444
LAN2_HUB
1K
OPT
R8454
ETNHUB_DVDD33
0 . 1 u F
C8423
0 . 1 u F
C8420
ETNHUB_AVDD33
1K
OPT
R8443
ETNHUB_EPHY_TXOP3
0 . 1 u F
C8410
0 . 1 u F
C8427
0 . 1 u F
C8432
0 . 1 u F
C8443
LAN2_HUB
4 9 . 9
1%
1%
R8412
REALTEK_WOL
DISDUALMII
0 . 1 u F
C8414
1K
R8460
OPT
330
R8428
0
R8410
ETNHUB_DVDD33
ETNHUB_AVDD18
470
R8462
OPT
TR1N
0 . 1 u F
C8446
LAN2_HUB
4 9 . 9
1%
1%
R8414
LD8401
OPT
A2[RD]
C
A1[GN]
0 . 1 u F
C8442
LAN2_HUB
EPHY_TDP
0 . 1 u F
16V
16V
C8401
LAN_LINK0
10K OPT
R8469
ETNHUB_AVDD18
1K
OPT
R8453
4 9 . 9
R8418
LAN2_HUB
ETNHUB_DVDD18
330
R8429
RSR025P03
Q8400
S
D
G
10K OPT
R8470
ETNHUB_DVDD18
LD8404
OPT
A2[RD]
C
A1[GN]
1K
OPT
R8457
LAN_LINK2
0 . 1 u F
C8418
PHY2PRXDV
ETNHUB_DVDD33
10K
OPT
R8468
ETNHUB_DVDD33
LD8405
OPT
A2[RD]
C
A1[GN]
470
R8463
OPT
ETNHUB_EPHY_TXOP2
4 9 . 9
R8416
LAN2_HUB
TR1P
1K
OPT
R8447
10K
R8404
ETNHUB_DVDD33
DUP3_GYMODE
ETNHUB_EPHY_TXON3
330
R8433
LAN2_HUB
1K
OPT
R8461
330
R8430
LD8402
OPT
A2[RD]
C
A1[GN]
0 . 1 u F
C8447
LAN2_HUB
ETNHUB_AVDD18
GYSPD
10K
OPT
R8405
100K
R8408
0 . 1 u F
C8405
1K
OPT
R8451
LD8403
OPT
A2[RD]
C
A1[GN]
BLM18PG121SN1D
L8407
22uF
10V
10V
C8404
22uF
10V
10V
C8416
22uF
10V
10V
C8402
22uF
10V
10V
C8403
RTL8306G
IC8401
1
AVDD18_1
2
RXIN[0]
3
RXIP[0]
4
AGND_1
5
TXOP[0]
6
TXON[0]
7
AVDD18_2
8
AVDD18_3
9
TXON[1]
10
TXOP[1]
11
AGND_2
12
RXIP[1]
13
RXIN[1]
14
AVDD18_4
15
AVDD18_5
16
RXIN[2]
17
RXIP[2]
18
AGND_3
19
TXOP[2]
20
TXON[2]
21
AVDD18_6
22
AVDD18_7
23
TXON[3]
24
TXOP[3]
25
AGND_4
26
RXIP[3]
27
RXIN[3]
28
AVDD18_8
29
AVDD18_9
30
RXIN[4]
31
RXIP[4]
32
AGND_5
33
TXOP[4]
34
TXON[4]
35
AVDD18_10
36
ITEST1
37
ITEST2
38
ITEST3
39 DGND_1
40 RESET#
41 ITEST4
42
DISDUALMII(MODESET4)
43 DVDD18_1
44
P4MODE[1](MODESET3)
45
P4MODE[0](MODESET2)
46P4FLCTRL/CPU_INTERRUPT#
47 P4SPDSTA
48
P4DUPSTA/HOME_CRS
49P4LNKSTA#
50 DGND_2
51
MTXC/PRXC/CTRL_REFCLK1
52M(R)TXEN/PRXDV
53 DVDD18_2
54
M(R)TXD[0]/PRXD[0]/LEDMODE[0]
55
M(R)TXD[1]/PRXD[1]/LEDMODE[1]
56
MTXD[2]/PRXD[2]/P4IRTAG[0]
57
MTXD[3]/PRXD[3]/P4IRTAG[1]
58MCOL/PCOL
59
MRXC/PTXC/REFCLK1
60
MRXDV/PTXEN/CRSDV
61
M(R)RXD[0]/PTXD[0]
62 DVDD33_1
63
M(R)RXD[1]/PTXD[1]
64 DGND_3
65
ITEST5
66
MRXD[2]/PTXD[2]
67
MRXD[3]/PTXD[3]
68
SEL_MIIMAC#/DISDSPRI
69
EN_AUTOXOVER
70
DVDD18_3
71
EN_RST_BLNK
72
ITEST6
73
PHY2PRXD[0]/M(R)2TXD[0]/ENEEPROM
74
SCL_MDC
75
SDA_MDIO
76
PHY2PRXD[1]/M(R)2TXD[1]/GXENFC
77
PHY2PRXD[2]/M2TXD[2]/GYENFC
78
PHY2PRXD[3]/M2TXD[3]/ENBKPRS
79
DGND_4
80
PHY2PRXDV/M(R)2TXEN/DISBRDCTRL
81
PHY2PRXC/M2TXC/CTRL_REFCLK2
82
PHY2PTXC/M2RXC/REFCLK2
83
DISPORTPRI[0]/PHY2PTXEN/M2RXDV/CRSDV2
84
DISPORTPRI[1]/PHY2PTXD[0]/M(R)2RXD[0]
85
DISPORTPRI[2]/PHY2PTXD[1]/M(R)2RXD[1]
86
DISPORTPRI[3]/PHY2PTXD[2]/M2RXD[2]
87
DVDD33_2
88
DISPORTPRI[4]/PHY2PTXD[3]/M2RXD[3]
89
PHY2PCOL/M2COL/LED_BLNK_TIME
90
LOOPLED#/ENDEFER
91
LED_ADD[4]/DISTAGPRI
92
LED_ACT[4]/DISHOMEPLUG
93
LED_SPD[4]/DISVLAN
94
DGND_5
95
LED_DUP[4]/SETGROUP
96
LED_ADD[3]/MODESET1
97
LED_ACT[3]/EN48PASS1
98
LED_SPD[3]/DISARP
99
LED_DUP[3]/MODESET0
100
DVDD18_4
101
LED_ADD[2]/DISLEAKY
102
DGND_6
103
LED_ACT[2]/P4ANEG
104
LED_SPD[2]/GXANEG
105
LED_DUP[2]/GYANEG
106
DVDD33_3
107
LED_ADD[1]/GXSPD100
108
LED_ACT[1]/GYSPD100
109
LED_SPD[1]/GXFULL
110
LED_DUP[1]/GYFULL
111
LED_ADD[0]/ENFORWARD
112
DGND_7
113
LED_ACT[0]/BCINDROP
114
LED_SPD[0]/MAX1536
115
LED_DUP[0]
116
CK25MOUT
117
OSCI
118
HVDD33
119
AVDD18_11
120
X1
121
X2
122
AGND_6
123
VCTRL
124
DTEST2
125
DTEST1
126
AGND_7
127
IBREF
128
AVDD18_12
GYFULL
1K
R8425
LAN_ACT0
GXMODE
1K
R8436
1M
R8415
AUTO_NEGO
25MHz
X8400
1K
R8442
ETNHUB_AVDD18
18pF
50V
C8440
X t a l _ O l d
P4MODE1
18pF
50V
C8441
X t a l _ O l d
0
R8440
Realtek WOL
ETNHUB_AVDD33
270
1%
R8423
EN_AUTOXOVER
LAN_LINK2
P4MODE0
33
R8434
GYSPD
1.69K
1%
R8424
LAN_LINK3
LAN_ACT3
PHY2PRXDV
ETNHUB_DVDD18
DUP3_GYMODE
ETNHUB_DVDD33
PHY2PTXEN
1K
R8426
OPT
GXFULL
GXSPD
PHY2PRXD3
DISDUALMII
LAN_ACT2
LAN_LINK0
SETGROUP
33
R8435
ETNHUB_DVDD33
ETHERNET_MDIO
ETNHUB_DVDD33
ETHERNET_MDC
0
R8427
Realtek WOL
REALTEK_WOL
1K
R8449
ETNHUB_DVDD33
1K
Realtek WOL
R8439
HUB_STATE
ETHERNET_RESET
ETHERNET_MDIO
ETHERNET_MDC
ETNHUB_EPHY_TXOP3
ETNHUB_EPHY_TXON3
ETNHUB_EPHY_RXIP3
ETNHUB_EPHY_RXIN3
ETNHUB_EPHY_RXIP0
ETNHUB_EPHY_RXIN0
ETNHUB_EPHY_TXOP0
ETNHUB_EPHY_TXON0
REALTEK_WOL
MAGIC_WOL
LAN_LINK0
LAN_ACT0
22uF
10V
10V
C8438
22uF
10V
10V
C8439
22uF
10V
10V
C8425
22uF
10V
10V
C8428
330
R8476
330
R8477
LD8406
OPT
A2[RD]
C
A1[GN]
LD8407
OPT
A2[RD]
C
A1[GN]
LAN_ACT2
LAN_LINK2
4.7K
OPT
R8441
ETNHUB_EPHY_RXIN2
ETNHUB_EPHY_RXIP2
ETNHUB_EPHY_TXOP2
ETNHUB_EPHY_TXON2
1.5K
R8458
1.5K
R8465
ETNHUB_EPHY_RXIN1
ETNHUB_EPHY_TXON1
ETNHUB_EPHY_RXIP1
ETNHUB_EPHY_TXOP1
ETHERNET_PWR_ON/OFF
+3.5V_ST
10K
R8487
10K
R8486
27pF
50V
C8441-*1
X t a l _ m a t c h i n g
27pF
50V
C8440-*1
X t a l _ m a t c h i n g
1K
R8456
ETNHUB_DVDD33
1K
R8488
OPT
PHY2PTXEN
1K
R8455
OPT
SETGROUP
ETNHUB_DVDD33
1K
OPT
R8490
1K OPT
R8489
MLB-201209-0120P-N2
L8404
MLB-201209-0120P-N2
L8408
CB2012PK501T
L8400
PHY TO RTL matching
$ 0 . 1 3
P l a c e c l o s e t o c h i p
V o u t = 1 . 5 * ( 1 + R 1 / R 2 )
MTK TO RTL matching
R1
CONFIG FOR MAC4
R2
Vout
P H Y 2 P R X D V : B r o a d c a s t s t r o m c o n t r o l e n a b l e / d i s a b l e
P H Y 2 P R X D 3 : B a c k p r e s s u r e e n a b l e / d i s a b l e
ENDEFER(NOT USED) : Defer enable/disable
EN_AUTOXOVER : Auto cross over enable/disable
P l a c e c l o s e t o c h i p
STRAPPING PIN CONFIG
RTL
SOC
P l a c e t o c e n t e r p o s i t i o n b e t w e e n t w o c h i p s
FOR DEBUG
WOL
P l a c e t o c e n t e r p o s i t i o n b e t w e e n t w o c h i p s
D i f f e r e n t i a l 1 0 0 o h m
N o V i a
C l o s e t o
P l a c e C l o s e T o R T L 8 3 0 6
P l a c e C l o s e T o R T L 8 3 0 6
M i d e : 1 1 1 1 1
2 0 1 1 . 0 2 . 0 9
xxLT760H-UA
84
E t h e r n e t H u b
S O C
TO PHY Chip
To PHY
P l a c e C l o s e d
LAN1
LAN2
R8426(NC) : Disable HOMEPLUG
10pF
50V
C9008
OPT
THERMAL
RTL8201FN
IC9000
1
MDI+[0]
2
MDI-[0]
3
NC_1
4
MDI+[1]
5
MDI-[1]
6
AVDD33_1
7
NC_2
8
NC_3
9
NC_4
10
NC_5
11
EN_LDO_OUT
12
TXER
13
RXDV
14
RXD[0]
15
DVDD33_1
16
RXD[1]
17
RXD[2]
18
RXD[3]/CLK_CTL
19
RXC
20
INTB
21
DVDD33_2
22
TXC
23
TXD[0]
24
TXD[1]
25
TXD[2]
26
TXD[3]
27
TXEN
28
DVDD10
29
PHYRSTB
30
MDC
31
MDIO
32
LED2/PHYAD[2]
33
PMEB
34
LED0/PHYAD[0]
35
LED1/PHYAD[1]
36
CRS/CRS_DV
37
DVDD33_3
38
COL
39
RXER/FXEN
40
DVDD10OUT
41
AVDD33_2
42
CKXTAL1
43
CKXTAL2
44
NC_6
45
NC_7
46
RSET
47
NC_8
48
AVDD10OUT
49
[EP]GND
0 . 1 u F
16V
C9001
0 . 1 u F
16V
C9012
LAN_AVDD33
0 . 1 u F
16V
C9011
MAGIC_WOL
0 . 1 u F
16V
C9002
LAN_AVDD33
ETHERNET_RESET
0 . 1 u F
16V
C9013
0 . 1 u F
16V
C9000
0 . 1 u F
16V
C9007
AO3407A
Q9000
G
D
S
ETHERNET_MDC
TR0P
PHY_STATE
LAN_AVDD33
0 . 1 u F
16V
16V
C9010
100K
R9008
TR1N
TR0N
ETHERNET_MDIO
TR1P
0 . 1 u F
16V
16V
C9004
0 . 1 u F
16V
16V
C9014
LAN_DVDD33
+3.5V_ST_LAN
BLM18PG121SN1D
L9000
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.
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.
25.0MHz
X9000
2.49K
1%
R9009
0 . 1 u F
16V
C9006
LAN_DVDD33
LAN_DVDD33
LAN_DVDD33
LAN_DVDD33
LAN_DVDD33
LAN_DVDD33
+3.5V_ST
LAN_DVDD33
BLM18PG121SN1D
L9001
+3.5V_ST_LAN
4.7K
R9011
4.7K
R9026
4.7K
R9027
4.7K
R9032
4.7K
R9025
4.7K
R9038
4.7K
R9012
4.7K
R9001
470K
R9002
1M 1%
OPT
R9010
TP9000
WOL_ON
0
R9064
OPT
4.7K
OPT
R9067
15pF
50V
C9003
X t a l _ O l d
15pF
50V
C9005
X t a l _ O l d
ETHERNET_PWR_ON/OFF
10K
R9065
2SC3052
Q9003
E
B
C
12pF
50V
X t a l _ m a t c h i n g
C9005-*1
12pF
50V
C9003-*1
X t a l _ m a t c h i n g
100
R9068
10K
R9069
LAN1_DET
GXFULL
5 . 6 B
ZD9000
1K
R9070
MMBT3904(NXP)
Q9001
E
B
C
ETNHUB_DVDD33
LAN_LINK3
MMBT3904(NXP)
Q9002
E
B
C
100
R9071
1K
R9073
10K
R9072
5 . 6 B
ZD9001
ETNHUB_DVDD33
LAN2_DET
0 . 1 u F
C9015
30V
D9006
30V
D9010
4 9 . 9
1%
1%
R9041
BLM18PG121SN1D
L9002
ETNHUB_EPHY_RXIN0
30V
D9008
GXFULL
ETNHUB_EPHY_TXON0
ETNHUB_AVDD18
30V
D9002
1000pF
C9017
GYSPD
30V
D9004
0 . 1 u F
C9021
0 . 1 u F
C9016
ETNHUB_EPHY_RXIP0
4 9 . 9
1%
1%
R9042
4 9 . 9
1%
1%
R9040
4 9 . 9
1%
1%
R9039
ETNHUB_EPHY_TXOP0
BLM18PG121SN1D
L9003
ETNHUB_EPHY_TXOP1
30V
D9007
0 . 1 u F
C9024
ETNHUB_EPHY_RXIN1
30V
D9011
ETNHUB_EPHY_TXON1
LAN_ACT3
30V
D9009
4 9 . 9
1%
1%
R9051
4 9 . 9
1%
1%
R9052
0 . 0 1 u F
C9022
4 9 . 9
1%
1%
R9053
ETNHUB_AVDD18
0 . 1 u F
C9025
1000pF
C9018
ETNHUB_EPHY_RXIP1
30V
D9005
4 9 . 9
1%
1%
R9054
LAN_LINK3
10
R9059
10
R9060
10
R9061
10
R9062
RJ45VT-01SLGY002
JK9000-*1
EMI_IMPROVE 1
2
3
4
5
6
7
8
L1
L2
L3
L4
13
RJ45VT-01SLGY002
JK9001-*1
EMI_IMPROVE 1
2
3
4
5
6
7
8
L1
L2
L3
L4
13
30V
D9003
RJ45VT-01SN002
JK9000
1
2
3
4
5
6
7
8
9
9
RJ45VT-01SN002
JK9001
1
2
3
4
5
6
7
8
9
9
PHY ADDRESS CONFIG
MCU PORT TO BE ASSIGNED!!
2
1
0
TO MCU
CONFIG PHY_ADDRESS = 111
TO RTL8306G HUB
T O S O C / M C U
P l a c e C l o s e d
E t h e r n e t P H Y
E t h e r n e t B l o c k
PHY chip for WOL
‹
2 0 1 1 . 0 8 . 2 6
xxLT760H-UA
90
Low
TO SOC
High
Low
LAN1_DET
LAN1 Detect
GXFULL
High
A37
I n p u t
Not Connected
Connected
S t a t u s
MTK pin no
LAN1_DET
C35
LAN2_DET
LAN_LINK3
S t a t u s
LAN2_DET
I n p u t
High
Low
MTK pin no
Low
High
LAN2 Detect
Not Connected
Connected
TO SOC
EMI PASS
NON_LED_LAN
LED_LAN_OLD
EMI BETTER
EMI FAIL
LED_LAN_NEW
LAN 1
EXT AUX RJ45
R J 4 5
P l z C h e c k O P T c o m p o n e n t ! !
LAN 2
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.
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.
1/16W
1.2K
R9102
760SCA_EXT_OPT
10uF
25V
25V
C9111
760SCA_EXT_OPT
EXT_5V
1/16W
20K
1%
R9114
760SCA_EXT_OPT
CB3216PA501E
L9101
760SCA_EXT_OPT
22uF
25V
25V
C9106
760SCA_EXT_OPT
NR8040T3R6N
3.6uH
L9104
760SCA_EXT_OPT
22uF
16V
16V
C9103
760SCA_EXT_OPT
12K
1%
R9116
760SCA_EXT_OPT
CB3216PA501E
L9103
760SCA_EXT_OPT
100
R9115
760SCA_EXT_OPT
BLM18PG121SN1D
L9102
760SCA_EXT_OPT
P_12V
1/8W
200K
1%
R9117
760SCA_EXT_OPT
22uF
16V
16V
C9101
760SCA_EXT_OPT
200
R9108
760SCA_EXT_OPT
18K
R9100
760SCA_EXT_OPT
470pF
50V
50V
C9105
760SCA_EXT_OPT
EXT_PWR_DET
EXT_12V
MP5000DQ
IC9101
760SCA_EXT_OPT
3
ENABLE/FAULT
2
DV/DT
4
I-LIMIT
1
GND
5
NC
6
SOURCE_1
7
SOURCE_2
8
SOURCE_3
9
SOURCE_4
10
SOURCE_5
11
VCC
43
R9104
760SCA_EXT_OPT
100K
R9105
760SCA_EXT_OPT
THERMAL
MP4460DQ-LF-Z
IC9102
760SCA_EXT_OPT
3
EN
2
SW_2
4
COMP
1
SW_1
5
FB
6
GND
7
FREQ
8
VIN_1
9
VIN_2
10
BST
11
EP_GND
THERMAL
TPS54327DDAR
IC9103
760SCA_EXT_OPT
3
VREG5
2
VFB
4
SS
1
EN
5
GND
6
SW
7
VBST
8
VIN
9
[EP]GND
APX803D29
IC9100
760SCA_EXT_OPT
1
GND
3
VCC
2
RESET
100pF
C9112
760SCA_EXT_OPT
EXT5V_CTRL
D9101
760SCA_EXT_OPT
A2
C
A1
56K
1%
R9113
760SCA_EXT_OPT
EXT_5V
0 . 1 u F
50V
C9104
760SCA_EXT_OPT
100K
R9110
760SCA_EXT_OPT
0 . 1 u F
50V
50V
C9110
760SCA_EXT_OPT
11K
1%
R9112
760SCA_EXT_OPT
0 . 1 u F
50V
C9107
760SCA_EXT_OPT
P_12V
150K
R9107
760SCA_EXT_OPT
EXT_12V
150pF
50V
50V
C9114
760SCA_EXT_OPT
+24V
1K
R9101
760SCA_EXT_OPT
0 . 1 u F
50V
50V
C9109
760SCA_EXT_OPT
MBRA340T3G
D9100
760SCA_EXT_OPT
22
R9111
760SCA_EXT_OPT
22UH
L9100
760SCA_EXT_OPT
10K
R9103
760SCA_EXT_OPT
0 . 1 u F
50V
C9113
760SCA_EXT_OPT
EXT12V_CTRL
0 . 1 u F
16V
16V
OPT
C9100
3 . 3 u F
50V
50V
C9102
760SCA_EXT_OPT
1/16W
10K
1%
R9106
760SCA_EXT_OPT
2.4K
R9109
760SCA_EXT_OPT
P_12V
3300pF
50V
50V
C9115
760SCA_EXT_OPT
1uF
10V
10V
C9108
760SCA_EXT_OPT
1/16W
270K
1%
R9118
760SCA_EXT_OPT
2 0 1 1 . 0 2 . 0 9
xxLT760H-UA
91
5V/12V Power Out
EXTERNAL_POWER OUT 5V/12V
c l o s e t o p i n
EXTERNAL_POWER DETECTION
$ 0 . 2 1
c l o s e I C 1 8 0 0
S w i t c h i n g n o i s e r e d u c i n g [ M P S r e c o m m e n d ]
Vout=(1+R1/R2)*0.765=5.03V