1
2
3
4
A
B
C
D
4
3
2
1
D
C
B
A
Title
Number
Revision
Size
A4
Date:
16-Feb-2011
Sheet of
File:
F:\Dongya\KYE Project\Fxilie\I177\Sch_PCB\SP I177.ddb
Drawn By:
USB MONO 2W AMPLIFIER
VER:A
C9
104
VCC
C6
10uF
C7
471
C5
105
R5
240k
R7
51k
C1
10uF
C4
104
SP-I177
C13
151
C8
471
R8
51k
R6
240k
R4
100K
R1
330R
R2
330R
L CH
RCH
GND
GND
USB 5V
R11
10K
R10
2K
BT1
3.7V
LN2054
Charge Current(R11) : 10k 100mA
Qiaolin.Ren
C16
22P
Q1
C945
Q2
C945
R12
330R
R3
15K
VCC
R
9
1
k
R
1
3
1
k
C2
104
C3
104
C14
105
C15
105
L1
BEAD120
L6
BEAD120
L7
BEAD120
L2
B
E
A
D
1
2
0
L5
B
E
A
D
1
2
0
1
2
3
4
5
J1
USB
CHRG
1
G
N
D
2
BAT
3
PROG
5
V
c
c
4
U2
VDD
B1
IN-
C1
IN+
A1
ShutDN
C2
GND
B3
Vo-
A3
Vo+
C3
PVDD
B2
G
N
D
A
2
U1
BA2010
4
5
VR1B
SW
3
2
VR1A
10K
R14
4.3K
2
1
R
e
d
G
re
e
n
LED1
R
e
d
_
G
re
e
n
L3
BEAD120
L4
BEAD120
C12
270P
C10
270P
C11
270P
S+
S-
SPK1
4R
1
2
3
4
5
COM1
5PIN
1
2
3
4
5
COM2
5PIN
+5V
L CH
RCH
GND
GND
+5V
L CH
RCH
GND
GND
+5V
1
2
3
4
8
GND
VCC
U3A
CM8608
5
6
7
U3B
CM8608
R15
4.7K
C17
NC
R164.3K
R20
10K
C19
101
R19
10K
VFER
C21
1u
R17
4.7K
R18
5.1K
C18
101
R227.5K
C20
101
C22
1u
R21 10K
C23 105
VFER
+5
+5
VCC
R23 100K
R24
100K
VFER
1
JK1
JJK3.5
R25
0R
R26
0R
RCH
R_CH
L_CH
+5
+5
