Flow Chart of Troubleshooting and Circuit Diagrams
5-2
PCB FIXING HOLES(1.9)
One Point Contact
VIN
15
VOUT
10UF/6.3V
C535
U621
LP2981AIM5X-3.3
2
GND
NC
4
3
ON/OFF
H403
D441
MCL4154
100UF
C579
100NF
C427
100NF
LP2981AIM5X-3.0
U620
2
GND
4
NC
ON/OFF
3
1
VIN
VOUT
5
C751
H400
100PF
C305
100K
R583
C748
1UF
C328
10UF/6.3V
RB414
ALERT_VCC
BAT1
R2
4
S2
10NF
C587
SI3865DV
U474
2
D2
3
D2
5
ON/OFF
R1,C1
61
VCC
AVCC
H401
1
5
VOUT
10NF
C319
U619
LP2981AIM5X-3.0
GND
2
4
NC
ON/OFF
3
VIN
10UF/6.3V
C750
GND
4
NC
ON/OFF
3
VIN
15
VOUT
H402
LP2981AIM5X-3.3
U470
2
C436
100UF
10UF/6.3V
C306
10NF
C326
C555
27PF
C307
C536
10NF
10NF
1K
R584
1UF
C749
1UF
1K
R738
RTC_VCC
+VBATT
POWER
VOUT
C318
+VBATT
RTC_3V3