Datasheet Texas Instruments LM5118MHX/NOPB — Datenblatt

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SNVS566J – APRIL 2008 – REVISED JUNE 2017 LM5118 Wide Voltage Range Buck-Boost Controller
1 Features 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. This dual-mode
approach maintains regulation over a wide range of
input voltages with optimal conversion efficiency in
the buck mode and a glitch-free output during mode
transitions. This easy-to-use controller includes
drivers for the high-side buck MOSFET and the lowside boost MOSFET. The regulators control method …