I'm using the MCP2021A for my project. In this component, there is a voltage regulator but I have no use for it. They usually power microcontroller like the PIC18F2455 but I'm using a Raspberry Pi which consumes too much current.
If I don't use this regulator, I have no output on my LIN BUS.
Can someone explain to me how it works so I can find a solution ?
Schematic:
I just connected pin 3 of IC (MCP2021A) to an unused Arduino so I can have VREG_OK which I don't have if it's floating.
If I don't use this Regulator I have no output on my LIN BUS.
What do you mean? Did you mean "left floating" by "not using"? The problem should be somewhere else. \$\endgroup\$