NewAI Part GeneratorFree to get started

QFN-28-1EP_4x5mm_P0.5mm_EP2.65x3.65mm_ThermalVias

Free PCB footprint for QFN-28-1EP_4x5mm_P0.5mm_EP2.65x3.65mm_ThermalVias, QFN, 28 Pin (http://www.analog.com/media/en/technical-documentation/data-sheets/3555fe.pdf#page=32). Preview it below, download the KiCad files, or open it straight in ProtoFlow.