1
1
2
2
3
3
4
4
5
5
6
6
D
D
C
C
B
B
A
A
UA_LM393DGKR
Title: usb_power.sch
Sheet 2 of 4
Date: 2019/5/22
Reviewed: Reviewed
Revision: PCBRev
Project State: ProjectState
ProjectCode
Purpose: MainFunction
Location: PCBLocationInSystem
GND
USB_N
USB_P
R115
1.5K
USB_N
USB_P
USB_CONNECT
R112
10K
EXT_CHARGER
R111
10K
R118
1.1K
GND
R120
806R
R121
475R
GND
CHECK_POWER
+3V3
R104
0R
C115
104
GND
+3V3
R100
0R
D1
6
G
1
1
S1
5
Q102A
Comment: FDC6306P
D2
4
G
2
3
S3
2
Q102B
FDC6306P
R116
1.1K
R117
1.1K
C105
104
GND
R122
820K
R119
1.1K
C106
104
GND
C104
225
GND
+3V3
VBUS_SENSE
USB_CONNECT
CHECK_POWER
EXT_CHARGER
R106
10K
+3V3
R105
10K
R107
10K
VBUS_SENSE
R108
10K
GND
R109
10K
R110
10K
GND
+3V3
EXT_PSU
EXT_PSU
R113
10K
GND
+5V_UNREG
C108
104
GND
C134
226
C135
226
+3V3
GND
GND
R123
100K
C107
104
C133
106
GND
VCC
1
D-
2
D+
3
GND
4
SHLD2
6
SHLD1
5
USB-B
J102
KS-001-BNW-L(USB Type B Jack)
C114
104
C140
105
R114
10K
R102
0R
R124
100K
GND
6
1
2
3
5
4
D107
USBLC6-2SC6
GND
C103
225
R101
0R
R103
0R
R126
30K
R125
475K
R128
16K
R127
5.1K
VIN
2
SW
3
VCC
8
EN
6
BOOT
1
G
N
D
4
FB
5
PGOOD
7
G
N
D
9
U101
RT8299AZSP
E101
100uF/25V
C102
225
E100
100uF/25V
L101
4.7uH
D102
LL4148
Q101
MMBT4403
2
3
1
U100A
LM393DGKR
6
5
7
U100B
LM393DGKR
V
+
8
V
-
4
U100C
LM393DGKR
1
2
3
D101
BAW56LT1G
1
2
3
D100
BAW56LT1G
Q100
MMBT4403
1
3
2
CN100
KD-014A-L(DC Power Jack)
2
1
3
5
6
4
S100
PS-22F02
1
2
3
4
L100
4.7uH
A
1
K
3
D104
MMBZ5236B(7.5V)
D105
MBRA340T3G
D106
MBRA340T3G
SH1
BMI-S-201-C(No Stuff)
GND