Texas Instruments LM5118
the LM5118 With the WEBENCH® Power Designer 2 Applications Industrial Buck-Boost Supplies 3 Description The LM5118 wide voltage range Buck-Boost switching regulator controller features all of the functions necessary to implement a highperformance, cost-efficient Buck-Boost regulator using a minimum of external components. The BuckBoost topology maintains output voltage regulation when the input voltage is either less than or greater than the output voltage, making it especially suitable for automotive applications. The LM5118 operates as a buck regulator while the input voltage is sufficiently greater than the regulated output voltage and gradually transitions to the buck-boost mode as the input voltage approaches the output.