The LTC3119 is a 5A monolithic Buck-Boost DC/DC converter that can operate over a wide range of 2.5V to 18V on VIN and 0.8V to 18V on VOUT. Integrated low RDS(ON) N-Channel DMOS power switches reduce solution complexity and maximize conversion efficiency. Internal high side power switch drivers require only two small external capacitors and further simplify application circuit design. The LTC3119 incorporates many additional features to allow maximum flexibility when designing application solutions, including an accurate RUN pin comparator, wide operating frequency range of 400kHz to 2MHz, external clock synchronization, power good indicator, and Maximum Power Point Control or MPPC of the input voltage for operation from current limited sources such as photovoltaic arrays.