Hi sir,
What is the capacity of the rechargeable battery that BQ25505 can manage?
Thank you!
Regards,
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Hi Frank,
There is no capacity constraint since the BQ25505 doesn't have a safety timer; however, its output charge current (and therefore the charge time for the battery) is set by its input power. You can estimate maximum charge current using efficiency=(VBAT_OV*ICHRG)/(VMPP*IINavg) where the maximum IINavg for this discontinuous mode PFM charger is slightly less than 1/2 of the peak inductor current of 230mA typical.
Regards,
Jeff