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BQ24210: recharge condition

Lazar Bojanic
Prodigy 10 points
Part Number: BQ24210


I plan to charge the battery of my IoT device with the BQ24210. 

The charger will be permanently connected to the Li Ion battery (18650 1cell, 3200 mAh)

Solar panel will be : Voc = 6V, Vmp = 4.4V, Imp = 500-750mAh

EN tied to PG (no LOAD mode)
Riset 780 Ohm
Rchg=Rpg=2K Ohm
Vdpm will float , unconnected

I wonder, in order to extend the life of the battery, is it possible, after the completion of the charging, to set up some how IC to wait for the battery voltage to decrease lets say to 3.5V in order to reactivate the recharge process again ?

  • 0
    TI__Guru* 76506 points
    Hello
    To change Recharge or Refresh to 3.5V will required external circuit to monitor the battery voltage and then control EN pin.
    BQ24210 will monitor the battery voltage at BAT pin and when it decreases by about 100mV below 4.2V the unit will start a Recharge cycle. But this circuit cannot be changed.