Hi,
We are using BQ24092 charger IC in our product to charge a 3.7V /300mAh LiPo battery. The average Load of our system is 100 mA. We have tested charging cycle with and without load.We observed that it takes around 1hr 30min to charge up to 4.19V where CHG pin goes high.It charges quickly up to 3.7V but from 3.7 to 4.19 it takes more than an hr. We have set Iset current as 450 mA and PRE-TERM pin is pull down to ground with 2 k resistor.
We want to design the charging circuit such that it should take around an hr to fully charge the battery with load of 100 mA ,when charged from the USB port of the PC.It will be great if you can help us on this .
Thanks in advance.