Other Parts Discussed in Thread: BQ24105
Hello,
I am using the BQ24103A as stand alone 2 cell Li/Ion charger. The charger work fine however I can not charge a flat battery where the protection circuit of the battery pack the shut off the cells. Normally, a small charge current is sufficient to reset the protection circuit. Whenever I power up the charger I do not see a voltage rise or a current flow at the charger output for a short time (observed by oszilloscope). I expect to be in precharge phase. The current I_set2 is set to 147mA. The circuit of the design is similar to figure 16 in the data sheet.
What is wrong or do you have a work around?
Regards,
S.Brockmann