3. TECHNICAL BRIEF
- 52 -
3.15. USB charging circuit
The USB charging circuit is a fully integrated USB VBUS voltage single-cell Li-ion battery charger
circuit. The charger uses a CC/CV charge profile required by Li-ion batteries. CC charging current and
End of charging current is programmable I
REF
& I
MIN
resistors.
I
REF
resistor between this pin and the GND pin to set the charge current limit determined by the
following equation:
I
CC
= 12089/30K = 400mA
The End Of Charging current is set by I
MIN
That can be programmed by the as following equation:
I
EOC
= 11000/110K = 100mA
Figure 25 USB charging circuit
To Next Page
Loading...
