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SCHEMATIC DIAGRAMS
SCH01 Bar MAIN SYS POWER
POWER IN
XP1
6PIN/2.5mm
6
6
5
5
4
4
3
3
2
2
1
1
DCDC 5V1
POWER_15V
R8
0Ω/0603
C13
C14
100K
USB 5V
0.1uF/16V/X7R
OTG_PWR_EN
POWER_15V
AMP_VCC
FR+
FR-
C7
100nF/25V/X5R
VOUT=0.6*(1+R10/R14)=5.1v
C9
0.1uF/16V/X7R
L2
3.3uH/3.4A
U3
R10
C11
R9
1
6
150K/1%
BST
SW
CE2
390K
C15
C16
5
3
+
VIN
FB
4
2
EN
GND
R13
R14
C18
20K/1%
SY8120I
USB_5V
U4
STB5V1
5
1
VIN
VOUT
C19
2
GND
R15
4
3
NC/10K
EN
FLG
JW7115-2
R17
1K
R18
NC/10K
DCDC 3V9
POWER_15V
R1
0Ω/0603
R2
390K
C3
C4
R4
NC/1K
MT8516_POWER
R5
C8
100K
DCDC 3V3
01UBUCK1-SY80882
Vin ：
2.5V<Vin<5.5V
STB5V1
STB5V1
R7
0Ω/0402
C17
4.7UF/10V/X5R
SYS_3V3
STB_3V3
0.1uF/16V/X7R
R16
SYS_POWER_CTL
9
VOUT=0.6*(1+R3/R6)=3.93v
STB3V9
C1
0.1uF/16V/X7R
L1
4.7uH/2A
U1
R3
C2
1
6
100K/1%
BST
SW
C5
C6
5
3
VIN
FB
4
2
EN
GND
R6
18K/1%
SY8120I
STB_3V3
Vout=0.6*(1+R11/R12)=3.32V
U2
SY8088I
4
3
L3
2.2uH/2.1A
VIN
LX
R11
C12
C10
22pF/50V/NP0
68K/1%
10UF/6.3V/X5R
1
5
EN
VFB
R12
15K/1%
SYS_3V3
U5
5
1
VIN
VOUT
C20
2
GND
4
3
EN
FLG
1K
JW7115-2
R258
10K
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