Boron LTE Resets when setting A3 High

I’ve purchased a number of PR54-7 boards for a customer product. To reduce power consumption I’ve desoldered the J1 jumper to connect the I2C power controller to A3. (Note: the boards I review had the I2C power controller pin soldered to the 3.3.v pad of J1. This is in contrast to the boards documentation). When I enable A3, the Boron LTE resets. I suspect that the A3 pin cannot source enough current to support the I2C power controller.

Does anyone have any insight into this issue? Or, are others seeing the same issue.

Thanks in advance for the help.

The IO controls a FET and FET controls the Power supply.
Try setting the A3 high manually and see if it still resets boron.

are you using the battery or usb to power the boron ?


The boards that I’ve purchased were soldered as per the Docs :

Note: It’s my understanding that this is (3) pads.
Default is the Top (2) connected, which allows 5V Boost control via Pin A3.
The other option is all (3) pads connected, not just the bottom (2).
(You mentioned that you de-soldered)

How are your Pads connected now?
Which firmware version are you using on your Boron?

Thanks for the response Bhaskar,

I’m powering the Boron LTE via battery.
I’ll try running via USB to see if there is a difference.