HI Sir/Mdm,
I had been using his BQ24090, and during out testing of this charger, we found the out of normal temperature fault indication from this IC. Usual understand is temperature fault, charging stop and charge light will go OFF. However, this IC has it that temperature fault, charge light remains ON though charging has stop. In the datasheet (pg19), it says “ON for 1st charge” on temperature fault.
My question are, what is the reason behind this indication mode to allow the charge light to remain ON while charging has stopped. This created a false impression that charging is still in progress.
The phrase “1st charge” has been used a number of times, what is the reason that 1st charge cycle is made different from subsequent cycles?
Regard's
Jason Teoh