Choose a Fuel Gauge with the Right Current Sensing for Your Battery System

Abstract: The accuracy of a fuel gauge depends on its ability to sense and measure the current flow in and out of the battery. We discuss the tradeoffs of two resistor-based current sensing schemes in a host-side battery system and a WLP technology that enables the integration of a high-side sense resistor for minimal space occupancy and BOM. These features can be found in the MAX1726x family of fuel gauges ICs that covers a wide spectrum of applications by offering the best possible resistor-based current sensing solution for the system at hand.