LTC3118EUFD#PBF

The LTC3118EUFD#PBF from Analog Devices is a versatile dual-input, wide voltage range synchronous buck-boost DC/DC converter. It features an intelligent, integrated low-loss PowerPath control, allowing efficient operation from either input source to a programmable output voltage that can be above, below, or equal to the input voltage.

This converter operates with a fixed 1.2MHz PWM frequency, minimizing solution footprint. It supports input voltage ranges from 2.2V to 18V and output voltage ranges from 2V to 18V. Key electrical specifications include an output current capability of 2A and a maximum efficiency of up to 94%. For light loads, it can enter Burst Mode operation, consuming only 50µA of quiescent current.

System-level features include ideal diode or VIN priority modes, VIN and VOUT power good indicators, and accurate RUN comparators for independent UVLO thresholds. The device is available in a thermally enhanced 24-lead 4mm x 5mm QFN package, suitable for surface mount applications. It also includes features like 2µA shutdown current, short-circuit protection, soft-start, current limit, and thermal overload protection.

Applications for the LTC3118EUFD#PBF include systems with multiple input sources, backup power systems, and wall adapter or Li-Ion(s) input to 5VOUT configurations. It can replace diode-OR designs, offering higher efficiency, flexibility, and performance.