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BQ24105: 3cell battery charger

Mike Jung
Intellectual 700 points
Part Number: BQ24105

Dear all.

I am going to charger 3cell battery using bq24105.

Please check the schematic below for any problems.

* Adaptor : 12 ~ 14V, 0.6A ~ 1A.

* Battery capacity : 11.1V(3.7V 3cell), Li-ion, 2200mAh(0.2C standard charging)

* Charge ending Voltage : 12.6±0.08V

and can I use ADTPWR and BATPWR together on a system power?

Thanks.

  • 0
    TI__Genius 10240 points
    Mike,

    You can tie ADTPWR and BATPWR together to your system load. Either Adaptor or Battery will provide the power to the system load. The system load will get the voltage ranging from the lowest battery voltage to the highest adaptor voltage. Assuming the battery can be discharged to 3 V for your case, the system needs to work in with the voltage range 9 V to 14 V.