5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
-7V DN1 NC R15=0 D5=7V5
20080410
+D
PET988
Ver A1
POWER
C
1
7
Wednesday, August 06, 2008
Title
Size
Document Number
Rev
Date:
Sheet
of
ON/OFF
9V
+9VIN
+5V
+1.8V
ON/OFF
+3.3V
VGL
VGH
PS
VGL
VGH
5VM
VDD
+9V
9V
PS
+3.3V
2,3,4
+9VIN
2,4
+5V
2,3,4
+1.8V
2
VGL
2
VGH
2
5VM
3
VDD
2,3,4
+9V
9V
2
+1.8V
5VM
+9VIN
+3.3V
+5V
GND
GND
GND
GND
+9VIN
GND
+5V
VDD
SGND
GND
GND
GND
+5V
+3.3V
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
C15
1uF
1
2
C7
1uF
1
2
DN1/NC
SS214U
1
2
3
R199
10
+
EC2
100uF/10V
1
2
CB1
0
.1
u
C157
0.1uF
R214
NC
U14
SS7701
1
2
3
4
5
CE
GND
VFB
EXT
VIN
R198
10
U13
SS7701
1
2
3
4
5
CE
GND
VFB
EXT
VIN
C8
1uF
1
2
C149
0.1uF
C159
0.1uF
DN3
SS214U
1
2
3
R15
4.7k
1
2
C152
0.1uF
D6
16V
1
2
R211 22K
R204 22K
R208
10K
R213
18K
Q6
2N3906
2
1
3
L6
22uH
+
EC64
100uF/25V
C153
560P
Q29 SSP0403STR
1
2
3
R16
1k
CB5
0.1u
C158
560P
C150
1uF(0805)
Q7
3904
2
1
3
R206
NC
Q1
SSP0403STR
R17
1k
1
2
R1
5
0
R
1
2
R2
1
0
K
C6
0.1uF
1
2
L4
FB 600R
J1
switchpower
1
2
3
4
5
6
D5
12V/7V5
1
2
C148
1uF(0805)
+
EC66
470uF/6.3v
F1
FUSE
R215
10K
+
EC65
470uF/6.3v
R1
910R 1%
C10
1uF
1
2
L4
22uH
C14
1uF
1
2
Q3
3904
2
1
3
R202
10
Q28 SSP0403STR
1
2
3
U2
1117-1.8V
2
1
3
4
OUT
GND
IN
OUT
R
4
100K
C3
0.1uF
D2
2
S
S1
4
DN2 SS214U
1
2
3
+
EC1
47uF/25V
1
2
R203
10
C12
100n
Q4
3904
2
1
3
CN1
DC JACK
1
3
2
R5
1K 1%
R3
5
18K 1%
D1
4001
1
2
R206
560
+
EC63
100uF/25V
C13
0.1uF
1
2
C9
0.1uF
1
2
D2
1
S
S1
4
Summary of Contents for PET988
Page 8: ...3 0 INSTRUCTION FOR USE ...
Page 9: ...3 0 INSTRUCTION FOR USE ...
Page 17: ...5 0 TROUBLESHOOTING SYMPTOM NO SOUND FROM HEADPHONE ...
Page 20: ...6 0 BLOCK DIAGRAM ...
Page 28: ......
Page 29: ......
Page 30: ......
Page 31: ......
Page 38: ...9 0 REVISION LIST Version 1 0 3141 785 33140 Initial release PET988 12 ...