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Como funciona este circuito?

C7
Capacitance
10uF
C8
Capacitance
4.7uF
C4
Capacitance
22uF
C5
Capacitance
0.047uF
C6
Capacitance
22uF
C3
Capacitance
10uF
C2
Capacitance
1uF
C1
Capacitance
10uF
R5
Resistance
260 Ω
R6
Resistance
10kΩ
R9
Resistance
10kΩ
R4
Resistance
10kΩ
USB
R1
Resistance
2.2kΩ
R3
Resistance
10kΩ
U1
R8
Resistance
10kΩ
R7
Resistance
5.25kΩ
R2
Resistance
31.23kΩ
LED1
L1
Inductance
2.2uH
HOST
+ VIN -
+ PMID -

BQ25895 Reference Design