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

BQ34110 (ACTIVE)

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

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

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
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     32000     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     Impedance Track     Impedance Track     CEDV     Impedance Track     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     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