Circuit Voltage Chart - LG SN4A Service Manual

CIRCUIT VOLTAGE CHART

IC Sym Pin
AVCC
IC101
MICOM
DVCC
IC102
SERIAL FLASH VCC:8
MEMORY
IC103
SERIAL FLASH VCC:8
MEMORY
IC201 VCC : 3
A/D
VDD: 4
CONVERTER
Vin: 4
IC301
DC,DC
LX: 3
Vin: 2
IC302
DC,DC
Vout: 3
Vin: 4
IC303
DC,DC
LX: 3
IC304 Vin: 5
Switch IC Vout: 1
Vin: 1
IC305
DC,DC
SW: 2
IC306 Vin: 5
Switch IC Vout: 1
Vin: 5
IC308
Switch IC
Vout: 1
Vin: 5
IC309
Switch IC
Vout: 1
Vin: 4
IC311
DC,DC
LX: 3
Vin: 1
IC312
Vout: 5
IC402
VA : 11
TUNER IC
DVCC12_K
DVCC33_IO
DDRVCCIO1
IC501
IC, Video Processors
AVDD33
AVDD12
VDD: B2, D9, G7, K2, K8,
IC502
N1, N9, R1, R9
DDR3 SDRAM
VDDQ: A1, A8, C1, C9, D2
MEMORY
E9, F1, H2, H9
IC503
SERIAL FLASH VCC:8
MEMORY
Specifi cation Measured Voltage
AVCC: 1.8 V ~ 3.6 V AVCC: 3.33 V
DVCC: 1.8 V ~ 3.6 V DVCC: 3.32 V
VCC: 2.7 V ~ 3.6 V VCC: 3.33 V
VCC: 2.7 V ~ 3.6 V VCC: 3.33 V
VCC: 4.5 V ~ 5.5 V VCC: 5.14 V
VDD: 2.7 V ~ 3.6 V D_3.3V : 3.31 V
Vin: 2.7 V ~ 5.5 V Vin: 5.14 V
Vout: 0.6 V ~ 5.225 V Vout: 3.32 V
Vin: +4.0 V ~ +36 V Vcc: 25.56 V
Vout: 0.8 V ~ 33 V Vout: 12.09 V
Vin: 2.7 V ~ 5.5 V Vin: 5.13 V
Vout: 0.6 V ~ 5.225 V Vout:1.51 V
Vin: 5.15 V
Vin: 2.5 V ~ 5.5 V
Vout(D_3.3V) : 3.32 V
Vout: 0 V ~ 5.5 V
(PWM_3.3V)3.33 V
Vin: 4.2 V ~ 17 V Vin: 12.09 V
Vout: 0.8 V ~ 10 V Vout: 5.14 V
Vin: 5.17 V
Vin: 4.5 V ~ 5.5 V Vout(VCC_5V) : 5.12 V
(USB_5V) : 5.15 V
Vin : 5.12 V
Vin: 4.5 V ~ 5.5 V
Vout : HDMI_5.1VA : 5.15 V
Vin: 2.5 V ~ 5.5 V Vin: 5.16 V
out: 0 V ~ 5.5 V Vout(WLS_3V3) : 3.32 V
Vin: 2.7 V ~ 5.5 V Vin: 5.14 V
VOUT: 0.6 V ~ 5.225 V VOUT: 1.218 V
Vin: 2.3 V ~ 6.0 V Vin: 5.18 V
out: 0.8 V ~ 5.0 V out: 3.31 V
VCC: 2.7V~5.5V VCC: 3.31 V
DVCC12_K : 1.14 V ~ 1.26 V DVCC12_K : 1.21 V
DVCC33_IO : 3.15 V ~ 3.45 V DVCC33_IO: 3.32 V
DDRVCCIO1: 1.425 V ~ 1.575 V DDRVCCIO1: 1.51 V
AVDD33 : 3.15 V ~ 3.45 V AVDD33: 3.32 V
AVDD12 : 1.14 V ~ 1.26 V AVDD12: 1.21 V
AVDD12_LDO: 1.14 V ~ 1.26 V
VDD: 1.51 V
VDD/VDDQ = 1.5 V(±0.075 V)
VDDQ: 1.51 V
VCC: 2.7 V ~ 3.6 V D_3.3V : 3.34 V
3-33
IC Sym Pin
VDD_IO: 17, 52
VDD_CORE: 6, 25
IC600
VIN33_REG1: 34
IC, Sound/Audio Processor
VIN33_REG2: 66
VDD_PLL: 68
GVDD_AB: 1
GVDD_CD: 22
PVDD_AB: 36, 37, 38
IC700
PVDD_CD: 29, 30, 31
AMP
VDD: 2
DVDD: 8
AVDD: 13
GVDD_AB: 1
GVDD_CD: 22
PVDD_AB: 36, 37, 38
IC701
PVDD_CD: 29, 30, 31
AMP
VDD: 2
DVDD: 8
AVDD: 13
3-34
Specifi cation Measured Voltage
VDD_IO: 2.97 V ~ 3.63 V VDD_IO: 3.33 V
VDD_CORE: 1.08 V ~ 1.32 V VDD_CORE: 1.24 V
VIN33_REG1: 2.97 V ~ 3.63 V VIN33_REG1: 3.33 V
VIN33_REG2: 2.97 V ~ 3.63 V VIN33_REG2: 3.3 V
VDD_PLL: 1.08 V ~ 1.32 V VDD_PLL: 1.24 V
GVDD_AB: -0.3 V ~ 13.2 V GVDD_AB: 11.7 V
GVDD_CD: -0.3 V ~ 13.2 V GVDD_CD: 11.7 V
PVDD_AB: -0.3 V ~ 50 V PVDD_AB: 25.5 V
PVDD_CD: -0.3 V ~ 50 V PVDD_CD: 25.5 V
VDD: -0.3 V ~ 13.2 V VDD: 11.9 V
DVDD: -0.3 V ~ 4.2 V DVDD: 3.306 V
AVDD: -0.3 V ~ 8.5 V AVDD: 7.8 V
GVDD_AB: -0,3 V ~ 13.2 V GVDD_AB: 11.7V
GVDD_CD: -0.3 V ~ 13.2 V GVDD_CD: 11.7 V
PVDD_AB: -0.3 V ~ 50 V PVDD_AB: 25.5 V
PVDD_CD: -0.3 V ~ 50 V PVDD_CD: 25.5 V
VDD: -0.3 V ~ 13.2 V VDD: 11.9 V
DVDD: -0.3 V ~ 4.2 V DVDD: 3.306 V
AVDD: -0.3 V ~ 8.5 V AVDD: 7.8 V
Copyright © 2021 LG Electronics Inc. All rights reserved.
Only for training and service purposes.