TCAN4550: 5 V power supply possible

Martin,

VCCout is an LDO output (and the CAN supply) of the TCAN4550 generated by the VSUP rail. If you have a 5V supply boosted to 9V connected to VSUP, and the 5V rail connected to VIO, the part will be able to function.

Please let me know if you have any other questions.

Regards,

Eric,

my example idea was to pull up the VSUP with a simple charge pump (2 capacitors and two diodes) with the help of a microcontroller GPO, which can drive about 10 mA. The main power supply should be a 5V source connected to VCCout and VIO.
But probably this is not possible and foreseen in the chip design.
Only with an external voltage of 5.5 V the LDO output should give up drawing current from Vsup.

Are there any plans to release a chip like the TCAN4550 but with a 5V supply?

Martin

Martin,

Oh okay, thanks for the explanation. Yes, I don't believe that would work unfortunately.

If you click on my username, you can find my email, and I can share more information about our products through there.

Regards,

Eric,

So there is absolutely no possible way to power this device off a 5V supply, correct?  It's nice that you have the LDO there, but I'd prefer not to use it.

Thanks,
Trey

Thats a shame cause you would have the market cornered.  The Microchip part isn't Q100, and I think TI and MC are the only two with standalone controllers in the market.