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POWER CONTROL
MAIN_POWER
MAIN_POWER
MAIN_POWER
GND
GND
GND
3_3VSB
3_3VSB
POWER_ON
GND
BL_ON
DIM_PWM
MAIN_POWER
12/24V
3_3VSB
T
12V/24V
P100
BL_ON
2
1
T
4
3
P_ON
GND
T
6
5
3_3VSB
GND
R136
8
7
POWER_ON
330R
DIM_PWM
10
9
BL_ON_OUT
BL_ON
DIM_PWM
12
11
R106
330R
C106
0.01U
R105
10K
C116
C115
C107
0.1U
0.01U
0.01U
GND
GND2
GND
KEY&IR
3_3VSB
D100
NC/
0BAV99
2
1
3
R164
GND
47K
C198 CLOSE TO connect
R165
22K
KEY_IN
C157
R165/C157 CLOSE TO IC
3_3VSB
0.1U
1
KEY
T
2
KEY1
GND
3
GND
NC
4
F103
KEY
P103
IR
GND
T
3_3VSB
GND
1
R109
IR
IR_IN
IR
220R
2
3_3VSB
GND
3_3VSB
3
R-LED
4
C154
C153
T
NC
GND
5
3_3VSB
0.1U
1000P
P104
GND
24V TO 12V
R100 NC
0R
R101 NC
0R
12V
MAIN_POWER
L101
392170
V_AUDIO
BS
C100
C101
0.1U
100U
35V
R123
GND3
220K
T
3V3SB
3_3VSB
GND
GND
GND
T
R110
MS_DIM_OUT
220R
R108
33K
C117
0.1U
Vout=0.8(1+470/33)=12.19V
GND
12V TO 5V
12V
KEY_IN
CD90
CD91
100U
1U
16V
T
CD95
R163
LED_OUT
GND
1K
0.1U
LED_OUT
C173
0.1U
GND
C118
R121
NC/470P
NC/10R
C119
0.1U
R120
12V
0R
R122
L102
100K
8.2UH
U101
C105
C109
8
1
0.1U
C102
BST
SW
10U/NC
D101
220U
R127
EN
SR34
7
2
VIN
EN
24K
16V
6
3
COMP
FREQ
COMP
GND
5
4
GND
FB
GND
FB
GND
MP1584
R126
13-DCMP15-84B
470K
C122
R125
1000P
C120
33K
390P
GND
GND
Shielding L 0710
CD9A
RD94
C159
RD92
0.1U
33R
15P
100K
UD90 MP1495
BST
GND
5
4
LD90
6.8UH
EN/SYNC
SW
6
3
VCC
IN
7
2
R132
R129
FB
AAM
R131
RD95
8
1
RD93
82K
0R
NC/10R
82K
39K
CD96
C161
0.1U
NC/470P
C160
R130
R133
RD96
GND
220R
10K
1000P
GND
33K
R134
GND
6K8
VCC=0.8(39/7.02+1)=5.24V
5V NORMAL POWER
CORE1.1V
LD60
Typ2A
1UH
12V
UD60
MP2143
T
PGND
4
SW
(Vin=2.5V-5.5V)
3
5V
VIN
2
C103
C104
PG
0.1U
1
CD61
CD60
1U
10U
0.1U
RD60
510K
Fixed Fsw=1.2MHZ
GND
Fixed OCP=4.2A
If Vout=1V Set RD61=150K RD62=4.7K RD63=220K
If Vout=1.2V Set RD61=150K RD62=0R RD63=150K
If Vout=1.5V Set RD61=150K RD62=8.2K RD63=91K
If Vout=1.8V Set RD61=150K RD62=6.2K RD63=68K
BOM COST=1.22RMB
U175
AZ1117
5V
3
VIN
VOUT
ADJ/GND
1
GND
U172
AS1117-3.3
5V
5V
Typ 3A
5V
CD97
U174 AZ1117
220U
CD98
CD99
10V
10U
0.1U
3
VIN
GND
GND
1V1
T
VCCK
@max3A
CD62
CD63
CD64
RD61
22U
22U
10U
OUT
150K
5
AGND
6
FB
7
Vref=0.6V
EN
8
GND
RD62
39K
C65
For timing sequence
0.1U
RD63
120K
GND
2
3_3V
T
C172
3_3V
NC/0.1U
GND
C176
0.1U
C175
10U
GND
1V5
T
1_5V
2
VOUT
ADJ/GND
1
C112
R171
0.1U
330R
R172
68R
C182
0.1U
10U
C181
GND
Output 1.5076V=1.25*(1+68/330)
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