BQ25570: Vout is very low

Part Number: BQ25570

Hi there,

When I use the BQ25570, I always get a low Vout problem.

• The schematic is as follows:

• When VBAT_OK rises to 1.5V, Vout should be 3.3V, but it is actually only 0.29V, and sometimes it rises irregularly to about 0.5V, but never reaches the desired 3.3V.

I am thinking about whether it is a schematic design problem, or a capacitor problem, because my capacitor for C+ is a common electrolytic capacitor, and I didnt use a supercapacitor.


I hope to get your reply soon :)

Much thanks !

Mason