bq34110 CEDV Battery Gas Gauge

Texas Instruments bq34110 CEDV Battery Gas Gauge provides CEDV gas gauging and End-Of-Service (EOS) Determination for single- and multi-cell batteries. The device includes enhanced features to support applications where the battery is kept fully charged and rarely discharged, as found in many backup systems. The bq34110 gas gauge supports multiple battery chemistries, including Li-Ion and LiFePO4, lead-acid (PbA), Nickel Metal Hydride (NiMH), and Nickel Cadmium (NiCd). The gas gauging function uses voltage, current, and temperature data with Compensated End-of-Discharge Voltage (CEDV) technology to provide State-Of-Charge (SOC) and State-Of-Health (SOH) data. The Texas Instruments bq34110 also incorporates an End-Of-Service (EOS) Determination function that alerts when battery capability has degraded and reaches the conclusion of its usable service. The host can read the data available from the gauge through a 400kHz I²C bus. Two ALERT outputs are also available to interrupt the host or can be used for other functions based on various configurable options.