LG 49UF6430 Service Manual page 54

+12V
L13411
BLM18PG121SN1D
C13443
10uF
25V
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
15/01/21
Copyright 2015 LG Electronics Inc. All rights reserved.
Only for training and service purposes
+1.5V URSA DDR
POWER_ON/OFF2_1
UF77
C13617
0.1uF
16V
IC13403
R13424
BD9D321EFJ
[EP]
UF64/68 10K
C13617-*1
0.1uF
25V EN VIN
1 8
16V
0.1uF
C13447
R13421 R13422 FB BOOT
2 7
R1
18K 3.6K L13412
1% 1%
VREG SW
3 6
C13444
100pF PS064T-2R2MS
50V
SS GND
3A
4 5
R13423
C13445 C13446
22K
1uF 2200pF
1%
10V 50V
R2
Vout=0.765*(1+R1/R2)=1.516V
+0.95V URSA11 Core
+1.5V_U_DDR
2.2uH
POWER_ON/OFF2_3
C13448 C13449
ZD13401
22uF 22uF
2.5V
10V 10V
OPT
C13402
0.1uF
16V
VDDC
C13451
C13450 C13400 C13401
C13411
0.1uF 22uF 22uF
22uF
150uF
6.3V
Vout=0.6*(1+R1/R2)=0.98V_FOR 0.95V at URSA11 VIA
VID_CTRL
VID_CTRL
R1:10K/R2:17.1K, V=0.95V(VID0=L,VID1=L)
R1:10K/R2:17.1K//120K, V=1.008V(VID0=H,VID1=L)
R1:10K/R2:17.1K//120K, V=1.008V(VID0=L,VID1=H)
R1:10K/R2:17.1K//120K//120K, V=1.05V(VID0=H,VID1=H)
MAX 4.7A
R13404
10K
R13407
39K
R1
1/16W
5%
C13403
1000pF
50V R2
RF FB
1 23
THERMAL
PGOOD GND
2 22
29
R13401 1K
EN MODE
3 21
16V
0.1uF IC13402
VBST VREG
4 20
TPS53513RVER
C13405
NC_1 VDD
5 19
R13400
2K
SW_1 NC_2
6 18
1/16W C13408
SW_2 VIN_3
5% 7 17 1uF
25V
SW_3 VIN_2
L13403 8 16
8A
1.0uH
SW_4 VIN_1
9 15
C13406
2200pF
50V
C13404
470pF
50V
+3.3V_NORMAL
D
EBK62072501
Q13401-*1
G
2N7002KA
S
URSA11_VID_FET_DIODES(SUB)
Q13401
D
2N7002KA
URSA11_VID_FET_KEC(MAIN)
R13416 0
EBK62072501
G
VID0
S URSA11_VID
EBK62072501
D
Q13400
2N7002KA
R13417 0
URSA11_VID_FET_KEC(MAIN)
G
VID1
S URSA11_VID
D
EBK62072501
Q13400-*1
G R13419 R13425
2N7002KA
10K 10K
URSA11_VID_FET_DIODES(SUB)
S
URSA11_VID_PULLDOWN URSA11_VID_PULLDOWN
URSA11_DCDC
VID_CTRL
+12V
L13402
C13407 C13409
10uF 10uF
25V 25V
BSD-15Y-LM14A-146_00-HD
LGE Internal Use Only