This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

BQ24091: Input Current and Charge Current

Part Number: BQ24091


When I set Iinmax = 1A, Ichg = 1A but Vin source connected to Note PC (Iinmax = 500mA)

1. Can I use Fast Charge (1A charging)? or charge current is limited only 500mA?

2. If Battery pulled 1A by force, It can make Host(Note PC) damaged? 

Could you let me get your answer ASAP?



  • Hi Nicky
    The bq24091 has Input DPM that will limit output current when input voltage decreases due to load, see data sheet section 9.3.10. Also figure 8 page 11.
    If the host connection is limited to 500mA the input voltage will drop and bq24091 will limit output current to keep the input voltage above about 4.4V.
    Damage to a correctly designed host USB port in this situation is not possible.