Hello, ive almost finished up adding the bq25731 to my pcb, but i currently dont have pin 5 ties to anything. This device is used with the tps25750s and used for sourcing usb-c.
should this pin stay floating, does it need to be grounded? or do I need to connect it to something? thanks!
Hi, Rowan,
Pin 5 is OTG/VAP/FRS function. It is used to controlled by a MCU or TPS25750 GPIO. You can either tie it to ground or pull it high depending on the function. DO NOT leave it floating.
Regards,
Tiger
Hi, Rowan,
I would suggest you keep two options then.
You may find below reference design helpful. PMP41013-Integrated USB Type-C® PD bidirectional charging reference design for one- to five-cell batteries
https://www.ti.com/tool/PMP41013
Regards,
Tiger
