Mikroe-2806 Buck-Boost click Mikroe Mikroe-2806 Buck-Boost click is a compact add-on board that contains a buck-boost DC-DC converter circuit. The Buck-Boost click is based on the Analog Devices Inc. LTC3129-1 Synchronous Buck-Boost DC-DC Converter. The LTC3129-1 features a broad input voltage range and can output eight discrete regulated output voltage levels, selectable by the digital output voltage selection pins, ranging from 2.5V to 15V. Also, the LTC3129-1 has very low noise and low ripple at the output, as well as very high regulating efficiency and low quiescent current.