Samsung GT-B3740 Service Manual page 49

SAMSUNG PROPRIETARY
THIS DOCUMENT CONTAINS CONFIDENTIAL
PROPRIETARY INFORMATION THAT IS
SAMSUNG ELECTRONICS COS PROPERTY.
DO NOT DISCROSE TO OR DUPLICATE FOR OTHERS
EXCEPT AS AUTHORIZED BY SAMSUNG.
VBUS_5.0V
R342
C355
U300
C301
VDD_CORE_1.2V
R302 1
FB2 FB1
2
EN1
CORE_ON_OFF EN2
TP_CORE_ON_OFF
3
PGOOD
AVIN
L301
4
VIN
SW2
5
SW1
AGND
R327
C310 C309
6
_FPWM
PGND
13
VBUS_5.0V
R340
C320
R341 1
FB2
2
RF_ON3
VPAM_LTE_3.3V EN2
3
AVIN
L304
4
SW2
5
AGND
R312
C324
C323 6
PGND
VBUS_5.0V
R324
U303
C306
R325 1
FB2 FB1
2
EN1
EN2
VDD_1.2V
3
PGOOD
AVIN
L302
4
SW2 VIN
5
AGND SW1
R311
C346
C314 6
PGND _FPWM
13
VDD_1.8V
R300
RESET_IN
C300
VBUS_5.0V VDD_3.3V
C302
VDD_1.3V
12
R303
11
VDD_1.8V
10
9
8
L313
7
R343
C311
R328
C313
VBUS_5.0V
U306
C319
12 R309
FB1
11
EN1
VDD_3.3V
10
PGOOD
9
VIN
8
L305
SW1
7
R313
_FPWM
R314 C327
13
RF_1.8V
ground
VBUS_5.0V
C345
12
R326
VDD_2.8V
11
VDD_1.3V
10
9
8 L303
7
R329
R330
C347
ground
C348
R361
U311
C350
1 6
BIAS EN
2 5
GND PGOOD
3 4
IN OUT RF_1.2V
RF_PLL_1.2V
C351
ground
ground
ground
RF_2.5V
U305 U304
C305 C318
1 4 1 4
VOUT VIN VDD_3.3V VOUT VIN
2 3 2 3
GND EN RF_ON1 GND EN
ground ground ground
VDD_2.5V
U308 U309
C330 C331
1 4 1 4
VOUT VIN VDD_3.3V VOUT VIN
2 3 R316 2 3 R317
GND EN GND EN
ground ground ground
U307
C329
1 VOUT1
VDD_3.3V
VIN
2 GND
VOUT2
3
RF_ON3 EN2
EN1
GND
7
ground
VDD_3.3V_CMC
U310
1 4
VOUT VIN
2 3
GND EN
U312
C353
1 6
VBUS_5.0V VIN GND
L314 2 5
SW FB
3 4
SNS EN
C354
VDD_ADC_1.254V 7
R355
VDD_3.3V
RF_ON1
L307
1005
VDD_1.2V AVDD_1.2V
R315
VDD_1.8V VDD1.8_M
SHORT
VDD_3.3V
6
TCXO_2.8V
5
VDD2.8_PDET
4
TCXO_EN
ground ground
VBUS_5.0V
R323
TP_TCXO_EN
TCXO_EN
R344
L306
1005
RF_PLL_1.2V PLL_RX_1.2V
L308
1005
RF_PLL_1.2V PLL_TX_1.2V
L309
1005
RF_PLL_1.2V TX_1.2V
L310
1005
RF_1.2V RX_1.2V
L311
1005
RF_2.5V RX_2.5V
L312
1005
RF_2.5V TX_2.5V