TruSemi LED Flashing Controller IC – TruSemi M34-1, This low voltage single output LED flashing controller IC can drive up to 3 LEDs simultaneously (max current 25mA). The IC has an in-built RC oscillator circuit, so requires minimum external components. Suitable for use with a range of products from cards and decorations to bicycle and disco lights. TruSemi M34-1 (3332-01)LED Flasher Chip 1Hz