N3 VIN Tolerance

Chris_Woodle · August 16, 2018, 6:48pm

Is the VIN on the N3 5v-12v or 7.5v-12v? According to the documentation here it states 5v-12v, however directly on my N3 Wifi, the silkscreen states 7.5v-12v. Also looking at the schematic it uses a TLV1117-50 which seems to have a minimum voltage of 6.4v.

Thanks all.

Nevyn · August 17, 2018, 5:10am

There are two ways to supply power to the Netduino range of boards:

V_in pin
Power barrel

If you are using the V_in pin on the headers then you should be using a regulated 5V power supply.

The power barrels on all of the Netduino silkscreens are marked with a lower voltage of 7.5V. I would stick with that as the lower voltage if using the power barrel. LDO regulators usually like a bit of headroom.

Regards,
Mark

Nevyn · August 17, 2018, 5:21am

And I forgot, USB can be used as a power source if 5V is applied across the power lines.

Regards,
Mark