PN7462 电源 5V之后,在供3.3V之后,5V被拉到4.2V,3V会被拉到2.9V,使用5V转3.3V稳压芯片也是会被拉低,
Hello @leo_wh
Hope you are doing well.
Our support engineers are located worldwide, could you please help us posting your inquiries in English?
My apologies, I am not able to see the full image you shared, it looks low resolution. Can you upload your schematic again?
Regards,
Eduardo.