The LM5118 wide voltage range Buck-Boost switching regulator controller features all of the functions necessary to implement a high performance, cost efficient Buck-Boostregulator using a minimum of external components. TheBuck-Boost topology maintains output voltage regulationwhen the input voltage is either less than or greater than theoutput voltage making it especially suitable for automotiveapplications. The LM5118 operates as a buck regulator whilethe input voltage is sufficiently greater than the regulated output voltage and gradually transitions to the buck-boost modeas the input voltage approaches the output. This dual modeapproach maintains regulation over a wide range of inputvoltages with optimal conversion efficiency in the buck modeand a glitch-free output during mode transitions.
