Hi,
I want to use the PF1550 in a wearable device. When I am looking into the typical application circuit I see that VBUSIN is the default power input of the PF1550. If a battery is connected to VBATT and VBUSIN is removed. Will VBATT automatically take over and source VSYS?
Typically I want a design with a battery powering VSYS and once in a while charge the battery by connecting USB to VBUSIN.
Kind Regards
Hi Daan,
Yes, if the charger is removed from VBUSIN, then VBATT will automatically power VSYS without any interrupt.
Best regards,
Tomas