The 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 is rarely discharged, such as found in a wide variety of 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 gas gauge also incorporates an End-Of-Service (EOS) Determination function that alerts when battery capability has degraded and is approaching the conclusion of its usable service.
●The data available from the gauge can be read by the host through a 400-kHz I2C bus. Two ALERT outputs are also available to interrupt the host or can be used for other functions, based on a variety of configurable options.
● Accurate End-Of-Service (EOS) Determination for Batteries in Rarely Discharged Applications
● Compensated End-of-Discharge Voltage (CEDV) Gas Gauge for Single- and Multi-Cell Batteries, Providing
● State-Of-Charge (SOC)
● Time-To-Empty (TTE)
● State-Of-Health (SOH)
● Watt-Hour–Based Charge Termination
● Supports Voltages up to 65 V, Capacities up to 32 Ah, and Currents up to 32 A—with Options to Extend Beyond These Levels Using Scaling
● Supports Li-Ion, LiFePO4, Lead-Acid (PbA), NiMH, and NiCd Chemistries
● Dual Configurable Host Interrupt or GPO
● Lifetime Data Logging Options
● Precision Coulomb Counter, Voltage, and Temperature Measurement
● Power Enable Control
● I2C™ Communication with Host
● Accumulated Charge Coulomb Counting with Configurable Interrupt
● SHA-1 Authentication