ADIMAX1672EEE+T
Overview
The MAX1672EEE+T is a high-efficiency buck-boost DC-DC converter capable of providing a steady 3.3V or 5.5V output from input voltages ranging from 1.8V to 11V. Unlike standard SEPIC or flyback converters, it utilizes a proprietary architecture that requires only a single small inductor to perform both step-up and step-down functions. This makes it an ideal solution for systems where the battery voltage starts above the target rail and eventually drops below it.
Why Choose This Part
The component features a very low 85uA quiescent current and a 0.1uA shutdown mode that completely disconnects the load from the input, preserving battery life. It eliminates the need for external FETs and uses a smaller inductor than traditional buck-boost topologies, saving significant board space. Built-in thermal and short-circuit protection ensure robust operation in compact portable designs.
Applications
Key Specifications
Getting Started
When designing the PCB, place the input and output filter capacitors as close as possible to the 16-QSOP package pins to minimize switching noise. Select a low-ESR inductor rated for at least 600mA to avoid saturation during peak switching cycles. Refer to the MAX1672 evaluation kit documentation for optimized layout patterns that manage thermal dissipation and ground loops.
