- 18 -
SCHEMATIC DIAGRAM
UD-503
UD-503
1
2
3
4
5
6
7
8
A
B
C
D
E
Z
USB PCB (4/4)
EN_DCDC3
EN_DCDC1
DEF_DCDC3
DEF_DCDC2
EN_DCDC2
VIN_5V
USB_EN
/PON
/PON
USB_VBUS
GND
V_SYS
V_SYS
V_SYS
V_SYS
V_SYS
3V3_SYS
LDO_1V8
LDO_1V2
1V2
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
LDO_1V8
3V3
3V3
3V3
GND
3V3_SYS
GND
GND
GND
GND
POR_/RESET (2)
USB_EN
(1)
Tap 1
Tap 2
Tap 3
Tap 4
Tap 5
600mA
1500mA
1500mA
100mA
DSP
USB0_VDDA33
USB1_VDDA33
100mA
DSP
DVDD3318_A
DVDD3318_B
DVDD3318_C
DSP
CVDD
DSP
RVDD
PLL0_VDDA
PLL1_VDDA
USB_CVDD
SATA_VDD
Default Voltage
Low : 1.8V
High : 3.3V
DSP
DVDD18
USB0_VDDA18
USB1_VDDA18
DDR_DVDD18
SATA_VDDR
Default Voltage
Low : 1.0V
High : 1.2V
DSP
/RESET
CONTROL POWER
EXTERNAL POWER
FLASH
EXTERNAL 5Vin
USB_EN
Lo : POWER-OFF
Hi : POWER-ON
[POWER SECTION]
UNLESS OTHERWISE NOTED:CR Size 1005
/PON
Lo : POWER-ON
Hi : POWER-OFF
T1-T3 : Solder side
fai:1.5
Solder side
R125
0
R125
0
R127
0
R127
0
R147
4.7K
R147
4.7K
PAD2
PAD2
1
2
P4
B3B-PH-K-S
P4
B3B-PH-K-S
1
2
3
R121
4.7K
R121
4.7K
D2
RB551V-30
D2
RB551V-30
T2
T2
C129
10u/16V [2012]
C129
10u/16V [2012]
R143
0 [1608]
R143
0 [1608]
R137
100K
R137
100K
Q6
DTA124EUB
Q6
DTA124EUB
E
B
C
R132
100K
R132
100K
R146
0 [1608]
R146
0 [1608]
R126
0
R126
0
L2
2.2uH/0.6A [LQM21PN2R2M]
L2
2.2uH/0.6A [LQM21PN2R2M]
C134
2.2u/16V [1608]
C134
2.2u/16V [1608]
TP60
[fai:0.7]
TP60
[fai:0.7]
C132
10u/16V [2012]
C132
10u/16V [2012]
C133
10u/16V [2012]
C133
10u/16V [2012]
R123
100K
R123
100K
C127
10u/16V [2012]
C127
10u/16V [2012]
D3
RB551V-30
D3
RB551V-30
R142
0 [2012]
R142
0 [2012]
C126
0.1u
C126
0.1u
R124
0
R124
0
C137
10u/16V [2012]
C137
10u/16V [2012]
C122
10u/16V [2012]
C122
10u/16V [2012]
U6
NJM2870F33
U6
NJM2870F33
VI
N
5
VOUT
4
NR
3
CT
L
1
GN
D
2
R130
100K
R130
100K
R136
100K
R136
100K
R140
10K
R140
10K
R128
100K
R128
100K
R145
0 [1608]
R145
0 [1608]
C125
10u/16V [2012]
C125
10u/16V [2012]
R133
100K
R133
100K
R141
0 [1608]
R141
0 [1608]
R120
1K
R120
1K
R138
0 [1608]
R138
0 [1608]
C128
10u/16V [2012]
C128
10u/16V [2012]
T3
T3
C135
2.2u/16V [1608]
C135
2.2u/16V [1608]
R134
270K
R134
270K
T1
T1
L1
2.2uH/0.6A [LQM21PN2R2M]
L1
2.2uH/0.6A [LQM21PN2R2M]
U5
TPS3805H33DCK
U5
N.C
1
GND
2
RESET
3
VDD
4
Sense
5
C120
1u/25V [1608]
C120
1u/25V [1608]
C138
0.1u
C138
0.1u
C124
10u/16V [2012]
C124
10u/16V [2012]
Q7
DTA124EUB
Q7
DTA124EUB
E
B
C
R122
10K
R122
10K
C136
2.2u/16V [1608]
C136
2.2u/16V [1608]
R144
0 [1608]
R144
0 [1608]
Q5
DTC124EUB
Q5
DTC124EUB
C
B
E
C131
10u/16V [2012]
C131
10u/16V [2012]
R131
100K
R131
100K
C130
2.2u/16V [1608]
C130
2.2u/16V [1608]
C123
10u/16V [2012]
C123
10u/16V [2012]
R135
120K
R135
120K
R129
100K
R129
100K
R139
4.7K [1608]
R139
4.7K [1608]
PowerPath
Charger
DC/DC
LDO
ADConv
TouchPanel
LED Power
Control
U4
TPS65070RSLR
PowerPath
Charger
DC/DC
LDO
ADConv
TouchPanel
LED Power
Control
U4
TPS65070RSLR
AVDD6
1
V_LDO2
2
VIN_LDO1/2
3
V_LDO1
4
BAT
5
BAT
6
SYS
7
SYS
8
I_SET
9
AC
10
TS
11
USB
12
POWER_ON
13
EN_DCDC1
14
EN_DCDC2
15
EN_DCDC3
16
DEF_DCDC3
17
DEF_DCDC2
18
V_DCDC1
19
L1
20
VIN_DCDC1/2
21
L2
22
V_DCDC2
23
PB_OUT
24
PB_IN
25
P_GOOD
26
SDAT
27
SCLK
28
V_DCDC3
29
PGND3
30
L3
31
VIN_DCDC3
32
I_SINK2
33
I_SINK1
34
I_SET1
35
I_SET2
36
L4
37
FB_WLED
38
RESET
39
INT
40
BYPASS
41
AGND
42
AD_IN1(TSX1)
43
AD_IN2(TSX2)
44
AD_IN3(TSY1)
45
AD_IN4(TSY2)
46
THRES_HOLD
47
INT_LDO
48
.
49