Multi-Chemistry High-cell Count Battery Fuel Gauge w/Integrated Rarely Discharged Module - BQ34110

BQ34110 (ACTIVE)

Multi-Chemistry High-cell Count Battery Fuel Gauge w/Integrated Rarely Discharged Module

 

Description

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.

Features

  • 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

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Parametrics Compare all products in Battery Fuel Gauge

 
Number of Series Cells
Cell Chemistry
Battery Capacity (Max) (mAh)
Communication Interface
Battery Capacity (Min) (mAh)
External Capacity Indication
Implementation
Gas Gauge Algorithm
Cell Balancing
Special Features
Operating Temperature Range (C)
Pin/Package
BQ34110 BQ27510-G3 BQ27542-G1 BQ34210-Q1 BQ34Z100-G1 BQ78350-R1
2-4 Cells
>4 Cells
Single Cell   
Single Cell    Single Cell    Single Cell    2-4 Cells
>4 Cells
Single Cell   
>4 Cells   
Lead Acid
Li-Ion/Li-Polymer
LiFePO4
NiCd
NiMH   
Li-Ion/Li-Polymer    Li-Ion/Li-Polymer    Li-Ion/Li-Polymer    Lead Acid
Li-Ion/Li-Polymer
LiFePO4
NiCd
NiMH   
Li-Ion/Li-Polymer
LiFePO4   
29000    16000    14600    14000    29000    320000   
I2C    I2C    HDQ
I2C   
I2C    HDQ
I2C   
I2C
SMBus   
100    300    100    100    100    100   
None    None    None    None    LED    LCD
LED
SOC   
Pack
System   
System    Pack    System    Pack
System   
Pack   
CEDV    IT (High accuracy)    IT (High accuracy)    CEDV    IT (High accuracy)    CEDV   
N/A    N/A    N/A    N/A    N/A    External
Internal   
Accumulated Coulomb Count
End of Service
SHA-1 Authentication   
N/A    SHA-1 Authentication
Turbo Mode   
End of Service    SHA-1 Authentication    Cell Balancing
Integrated Protector
SHA-1 Authentication   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
14TSSOP    12SON    12SON    14TSSOP    14TSSOP    30TSSOP