Circuit Voltage Chart; Ic Voltage; Capacitor Voltage; Connector Voltage - LG SJ4Y Service Manual

CIRCUIT VOLTAGE CHART

1. IC VOLTAGE

Designator Description Pin No
11
IC101 IC,Microcontrollers
15, 40
IC102 IC,Serial Flash Memory 8
IC103 IC,Serial Flash Memory 8
3
IC201 IC,A/D Converter
4
4
IC301 IC,DC,DC Converter
3
2
IC302 IC,DC,DC Converter
3
4
IC303 IC,DC,DC Converter
3
5
IC304 IC,Analog Switch
1
5
IC306 IC,Analog Switch
1
5
IC308 IC,Analog Switch
1
5
IC309 IC,Analog Switch
1
4
IC311 IC,DC,DC Converter
3
IC501 IC,Video Processors
B2, D9, G7,
K2, K8, N1,
N9, R1, R9
IC502 IC,DDR3 SDRAM
A1, A8, C1,
C9, D2, E9,
F1, H2, H9
IC503 IC,NOR Flash Memory 8
17, 52
6, 25
IC600 IC,Sound/Audio Processor 34
66
68
1
22
36, 37, 38
IC700 IC,Audio Amplifi er 29, 30, 31
2
8
13
1
22
36, 37, 38
IC701 IC,Audio Amplifi er 29, 30, 31
2
8
13
1
IC803 IC,DC,DC Converter
2
Measured Temperature
Pin Name Voltage Spec
Voltage
AVCC 1.8 V ~ 3.6 V 3.34 V
DVCC 1.8 V ~ 3.6 V 3.34 V
VCC 2.7 V ~ 3.6 V 3.34 V
VCC 2.7 V ~ 3.6 V 3.33 V
VCC 4.5 V ~ 5.5 V 5.15 V
VDD 2.7 V ~ 3.6 V 3.32 V
VIN 2.7 V ~ 5.5 V 5.16 V
SW 0.6 V ~ 5.225 V 3.37 V
VIN + 4.0 V ~ + 36 V 25.2 V
VOUT 0.8 V ~ 33 V 12.08 V
VIN 2.7 V ~ 5.5 V 5.15 V
SW 0.6 V ~ 5.225 V 1.51 V
VIN 2.5 V ~ 5.5 V 5.16 V
D_3.34V /
VOUT 0 V ~ 5.5 V
PWM3.34V
VIN 4.5 V ~ 5.5 V 5.17 V
5.17 V
VOUT
(USB 5.16 V)
VIN 4.5 V ~ 5.5 V 5.16 V
VOUT 5.14 V
VIN 2.5 V ~ 5.5 V 5.16 V
VOUT 0 V ~ 5.5 V D_3.34V
VIN 2.7 V ~ 5.5 V 5.15 V
SW 0.6 V ~ 5.225 V 1.205 V
DVCC12_K 1.14 V ~ 1.26 V 1.21 V
DVCC33_IO 3.15 V ~ 3.45 V 3.32 V
DDRVCCIO1 1.425 V ~ 1.575 V 1.51 V
AVDD33 3.15 V ~ 3.45 V 3.32 V
AVDD12 1.14V ~ 1.26 V 1.21 V
VDD 1.5 V (± 0.075 V) 1.51 V
VDDQ 1.5 V (± 0.075 V) 1.51 V
VCC 2.7 V ~ 3.6 V 3.32 V
VDD_IO 2.97 V ~ 3.63 V 3.33 V
VDD_CORE 1.08 V ~ 1.32 V 1.24 V
VIN33_REG1 2.97 V ~ 3.63 V 3.33 V
VIN33_REG2 2.97 V ~ 3.63 V 3.3 V
VDD_PLL 1.08 V ~ 1.32 V 1.24 V
GVDD_AB -0.3 V ~ 13.2 V 11.7 V
GVDD_CD -0.3 V ~ 13.2 V 11.7 V
PVDD_AB -0.3 V ~ 50 V 25.5 V
PVDD_CD -0.3 V ~ 50 V 25.5 V
VDD -0.3 V ~ 13.2 V 11.9 V
DVDD -0.3 V ~ 4.2 V 3.306 V
13 AVDD -0.3 V ~ 8.5 V 7.8 V
GVDD_AB -0.3 V ~ 13.2 V 11.7 V
GVDD_CD -0.3 V ~ 13.2 V 11.7 V
PVDD_AB -0.3 V ~ 50 V 25.5 V
PVDD_CD -0.3 V ~ 50 V 25.5 V
VDD -0.3 V ~ 13.2 V 11.9 V
DVDD -0.3 V ~ 4.2 V 3.304 V
AVDD -0.3 V ~ 8.5 V 7.8 V
VIN 4.2 V ~ 17 V 12.1 V
SW 0.8 V ~ 10 V 5.17 V
3-23

2. CAPACITOR VOLTAGE

Designator Description
Spec.
C390, C734,
Capacitor,AL,Chip
C769
85 °C
WC706 Capacitor,AL,Chip
85 °C
WC904 Capacitor,AL,Radial
85 °C
WC917 Capacitor,AL,Chip
125 °C
WC924, WC925,
Capacitor,AL,Radial
WC926
125 °C
125 °C
125 °C
125 °C
110 °C

3. CONNECTOR VOLTAGE

110 °C
125 °C
Power
3.3 VA
125 °C
Power
WL_3V3
95 °C
Power
3.3 VA
95 °C
85 °C
85 °C
125 °C
125 °C
125 °C
3-24
SPEC Real Value (#1, #2)/ V
330 uF/ 35 V 25.76 25.75 25.78 25.81 25.76
100 uF/ 16 V 3.42 3.41 3.42 3.42 3.41
100 uF/ 460 V 155.3 155.4 155.4 155.29 155.4
47 uF/ 50 V 20.15 20.22 20.22 20.16 20.2
1000 uF/ 50 V 34.9 34.88 34.9 34.93 34.88
CN102 (MAIN <-> BT)
MAIN BT module
3.33 V 3.32 V
CN107 (MAIN <-> Wireless)
MAIN Wireless module
3.308 V 3.304 V
CN108 (MAIN <-> Rear Wireless)
MAIN Wireless module
3.33 V 3.302 V
Copyright © 2017 - 2019 LG Electronics Inc. All rights reserved.
Only for training and service purposes.
Temperature Spec.
-40 ~ 105 °C/ 2000 HR
-55 ~ 105 °C/ 2000 HR
-25 ~ 105 °C/ 2000 HR
-55 ~ 105 °C/ 2000 HR
-55 ~ 105 °C/ 2000 HR
SPEC
3.3 VA (1.7 V ~ 3.6 V)
SPEC
3.3 V (3.15 V ~ 3.45 V)
SPEC
3.3 V (3.15 ~ 3.45 V)