Maxim Integrated MAX17040G-C01+T Fuel Gauge IC

The MAX17040G-C01+T from Maxim Integrated is a sophisticated, compact fuel gauge integrated circuit (IC) designed to provide precise battery state-of-charge (SOC) information for single-cell lithium-ion (Li+) batteries. This tiny, power-efficient component is an essential piece for portable electronic devices where battery life indication is critical, such as smartphones, tablets, and wireless headphones.

Utilizing Maxim's patented ModelGauge™ algorithm, the MAX17040G-C01+T does not require an external sense resistor and eliminates the need for battery characterization for most applications. This innovative technology simplifies the design process and reduces the overall bill of materials, making it an economical choice for designers.

The ModelGauge algorithm employed by the MAX17040G-C01+T combines the short-term accuracy and linearity of a coulomb counter with the long-term stability of a voltage-based fuel gauge, along with temperature compensation to provide a reliable battery state-of-charge reading. This ensures users have a clear and accurate understanding of their device's battery life, enhancing the user experience.

The integration of the MAX17040G-C01+T is further simplified thanks to its I²C interface, which allows for easy communication with the host system. This interface provides access to all necessary data, such as SOC estimates, voltage, and other vital battery parameters. The IC also includes an alert feature that notifies the system when the battery falls below a programmable threshold, allowing for proactive power management.

Available in a compact, lead-free, 8-pin TDFN package, the MAX17040G-C01+T is designed to occupy minimal space on a PCB, making it ideal for space-constrained applications. Its operating temperature range from -40°C to +85°C ensures reliable performance across a wide range of environmental conditions.

In summary, the MAX17040G-C01+T fuel gauge from Maxim Integrated offers a high level of integration, accuracy, and ease of use for designers looking to enhance their battery-powered devices with reliable SOC information.