FTDI Community

Please login or register.

Login with username, password and session length.
Advanced Search  


Welcome to the FTDI Community!

Please read our Welcome Note

Technical Support enquires
please contact the team
@ FTDI Support

New Bridgetek Community is now open

Please note that we have created the Bridgetek Community to discuss all Bridgetek products e.g. EVE, MCU.

Please follow this link and create a new user account to get started.

Bridgetek Community

Author Topic: FT234XD - 3V3OUT is at 3.86V  (Read 1584 times)


  • Newbie
  • *
  • Posts: 1
    • View Profile
FT234XD - 3V3OUT is at 3.86V
« on: June 11, 2018, 05:00:26 PM »

Hi, I'm trying to use the FT234XD for both the power supply and USB-to-Serial for my device. The device will draws less than 15 mA.
I've tested the FT234XD (from Digikey) chips on my board, it produces 3.86V with and without the load connected.
We also ordered UMFT234XD dev boards. These work well, connected to the load and without they provide a nice stable 3.3V supply.
What could be the problem? Are there some settings that we're missing?

FTDI Community

  • Administrator
  • Sr. Member
  • *****
  • Posts: 414
    • View Profile
Re: FT234XD - 3V3OUT is at 3.86V
« Reply #1 on: June 12, 2018, 05:00:17 PM »


It sounds like there may be an issue with your custom board.

Can you please send the schematics to support1@ftdichip.com and we can review them?

Best Regards,
FTDI Community