2 layers142.5 × 110 mm

Boards in 1 GitHub repository, designed in KiCad, that use the L4978 by STMicroelectronics (-40℃~+150℃@(TJ) 1 2.5mA 2A 3.3V~50V 300kHz 8V~55V Adjustable Buck Buck Built-in No DIP-8 DC-DC Converters ROHS). See how each wires it, with its parts, size, README and files; the L4978’s symbol, footprint and pinout are on its own page.
