Page 8
Page 9
You can also power the board using
Li-Polymer
battery, via on-board
battery connector. On-board battery
charger circuit
MCP73832
enables
you to charge the battery over USB
connection. Charging current is ~250mA
and charging voltage is 4.2V DC.
VCC-SYS VCC-3.3
E3
10uF
E4
10uF
R26
2K2
VCC-BAT
D1
PMEG3010ER
R44
3K9
Charging Current approx. 250mA
R39
4K7
VCC-3.3
E7 10uF
C40
2.2uF
R34
4K7
R6
4K7
VCC-BAT
VSENSE
VCC-SYS
VCC-SYS
VCC-BAT
VCC-USB
R43
10K
R37
10K
R36
10K
VCC-3.3
STAT
R38
10K
R45
1K
VCC-3.3
E5
10uF
R35
10K
VCC-3.3
R49
4K7
3
1
2
GND
Vin
Vout
REG1
LD29080DT33
VCC-BAT
LD1A
GREEN
LD2B
RED
1
2
CN1
BATT CONN
M1
DMP2160UW
2
3
5
4
1
STAT
VSS
VBAT
PROG
VDD
U5
MCP73832
Q4
BC846
Q5
BC846
D
AT
A BUS
Figure 2-1: Connecting Li-polymer battery
to mikromedia board
2. Battery power supply
Figure 2-2:
Battery charger and
power management
connection schematics
