The TLD5097EL is a LED boost controller with built in protection features The TLD5097EL offers versatile configurations like Boost, Buck, Buck-Boost, SEPIC, and Flyback through simple adjustment of external components. Although lacking an SPI, it provides a powerful feature set and serves as an alternative for applications where electronics are integrated in the same housing as the load, such as day-time-running lights or cost-effective LED headlamps.