4 Replies Latest reply on Aug 2, 2016 6:57 AM by o.normalverbraucher_1778496

    Internal Regulator Problems

    o.normalverbraucher_1778496

      Hi,

         

      I´m trying to power the CY8C5267-AXI-LP051 from a 5V Supply, but i have the problem, that the internal 1.8V regulator somehow does not regulate to 1.8V, when a voltage higher than 3V is applied to the VDDD-pins of the micro. If I apply 5V the internal regulator output is 3.3V or 3.4V. I looked and looked at the design of my PCB, but I was not able to find the source of the problem.

         

      Otherwise, the chip seems to work (somehow) with the higher core voltage (at least for a few seconds), I even managed to program it.

         

      I attached two pictures of the PCB to the post, could someone please tell me what I did wrong?

         

      Thanks in advance