MAX17055ETB+T

The MAX17055ETB+T is a fuel gauge IC from Analog Devices designed for efficient battery monitoring in portable electronics. It utilizes the ModelGauge m5 EZ algorithm, which simplifies implementation by eliminating the need for battery characterization and reducing host software interaction. This robust algorithm provides accurate state of charge (SOC) and remaining capacity (mAh) estimations, compensating for cell aging, temperature, and discharge rate.

The device offers a low operating current of just 7μA, making it ideal for power-sensitive applications. It supports a wide range of sense resistors from 1mΩ to 1000mΩ and includes internal temperature measurement with ±1°C accuracy, or can use an external thermistor. The MAX17055ETB+T is available in compact WLP (9-pin, 1.4mm x 1.5mm) and TDFN (10-pin, 2mm x 2.5mm) packages, both suitable for surface mounting.

Key features include tolerance against battery diversity for most lithium batteries, elimination of error near empty voltage, and compensation for coulomb counter drift. It provides dynamic power estimates and time-to-empty/full estimations under various load conditions. The IC communicates via a 2-wire I2C interface, offering access to data and control registers.