BQ34110 Texas instruments

BQ34110

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BQ34110

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Описание

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

Cell chemistry	Lead Acid, Li-Ion/Li-Polymer, LiFePO4, NiCd, NiMH
Number of series cells	2-4 Cells, >4 Cells, Single Cell
Communication interface	I2C
Battery capacity (min) (mAh)	100
Battery capacity (max) (mAh)	32000
Implementation	Pack, System
External capacity indication	None
Features	Accumulated Coulomb Count, CEDV algorithm, End of Service, SHA-1 Authentication
Operating temperature range (°C)	-40 to 85
Rating	Catalog