2 layers20 × 49.5 mm

Boards in 1 GitHub repository, designed in KiCad, that use the TX4204 by XDS (-20℃~+85℃ 1 15uA 3.3V 900mV~5V Boost Boost Built-in Fixed Yes SOT-23-3 DC-DC Converters ROHS). See how each wires it, with its parts, size, README and files; the TX4204’s symbol, footprint and pinout are on its own page.
