Maxim Integrated MAX17049G+T Fuel Gauge IC

The Maxim Integrated MAX17049G+T is a compact, high-precision fuel gauge Integrated Circuit (IC) designed to provide accurate monitoring of single-cell lithium-ion (Li+) batteries. This advanced IC is an essential component for portable devices where battery life and efficiency are crucial. With its ModelGauge™ algorithm, the MAX17049G+T eliminates the need for battery characterization and simplifies the implementation of battery state-of-charge (SoC) monitoring.

The MAX17049G+T operates over a wide voltage range of 2.5V to 5.5V, making it versatile for various applications. It features a low quiescent current of only 23µA, which is beneficial for battery-powered devices as it helps to extend battery life by minimizing power consumption when the device is in standby mode.

One of the key features of the MAX17049G+T is its ModelGauge m3 algorithm, which provides a robust fuel gauging capability by combining the short-term accuracy and linearity of a coulomb counter with the long-term stability of a voltage-based fuel gauge. This algorithm also compensates for cell aging, temperature, and discharge rate, providing a more accurate battery SoC reading.

The IC integrates a variety of functions, including automatic cell-model selection, charge tracking, and a voltage-based state-of-charge (SOC) indicator. It communicates through an I2C interface, allowing for easy integration into system designs. Additionally, the MAX17049G+T features an Alert output that can be programmed to indicate when the battery falls below a user-defined threshold.

The MAX17049G+T comes in a tiny, lead-free, 8-pin TDFN package with a 2.0mm x 2.5mm footprint, making it ideal for space-constrained applications. Its temperature range of -40°C to +85°C ensures reliable operation in a variety of environments.

Overall, the Maxim Integrated MAX17049G+T is a sophisticated solution for battery management in portable electronics, offering designers a blend of accuracy, ease of use, and efficiency to enhance the user experience by providing reliable battery status information.