LTC3531-3.3

The LTC^®3531/LTC3531-3.3/LTC3531-3 are synchronous buck-boost DC/DC converters that operate from input voltages above, below or equal to the output voltage. The topology incorporated in the ICs provides a continuous transfer through all operating modes, making the product ideal for single cell Li-Ion and multicell alkaline or nickel applications. The converters operate in Burst Mode, minimizing solution footprint and component count as well as providing high conversion effi ciency over a wide range of load currents.

The devices include two 0.5 N-channel MOSFET switches and two P-channel switches (0.5, 0.8). Quiescent current is typically 16A, making the parts ideal for battery power applications. Other features include a <1A shutdown current, current limiting, thermal shutdown and output disconnect. The parts are offered in a 6-pin ThinSOT^TM package for fi xed voltage versions or a 3mm * 3mm DFN package for fi xed and adjustable versions.