4 layers

The MP6540GU is an uncategorised made by Monolithic Power Systems in a QFN-26_L5.0-W5.0-P0.50 package with 26 pins. QFN-26(5x5) New Arrivals ROHS.
JLCPCB lists it (part C2856220). 1 open-source board in 1 repository on GitHub use it.
The library has no symbol for this part yet.
The library has no footprint for this part yet.

QFN-26_L5.0-W5.0-P0.50, with 26 pins.
JLCPCB lists it as part C2856220, with 0 in stock; the sellers' links on this page open their listings.
1 board in 1 repository on GitHub; the most starred are listed on this page, with their KiCad files.