Theory and Implementation of Impedance Track Battery Fuel-Gauging Algorithm

Texas Instruments

Published Date: 01/31/2008

Description

This application report outlines the theory of Impedance Track™ (IT) technology used in the bq2750x series of fuel gauge ICs for single-cell Li-ion application (e.g., smart phones, media players, and PDAs). The implementation of the IT algorithm in the bq2750x family is reviewed, and the setting of data flash constants associated with the fuel-gauging algorithm is described in detail.

Parts

Part Number Name Companion Part
BQ27410DRZR-G1 BQ27410DRZR-G1 Buy Datasheet
BQ27410DRZT-G1 BQ27410DRZT-G1 Buy Datasheet
BQ27441DRZR-G1A BQ27441DRZR-G1A Buy Datasheet
BQ27441DRZT-G1A BQ27441DRZT-G1A Buy Datasheet
BQ27500DRZR BQ27500DRZR Buy Datasheet
BQ27500DRZR-V100 BQ27500DRZR-V100 Buy Datasheet
BQ27500DRZR-V100G4 BQ27500DRZR-V100G4 Buy Datasheet
BQ27500DRZR-V120 BQ27500DRZR-V120 Buy Datasheet
BQ27500DRZR-V120G4 BQ27500DRZR-V120G4 Buy Datasheet
BQ27500DRZT BQ27500DRZT Buy Datasheet
BQ27500DRZT-V100 BQ27500DRZT-V100 Buy Datasheet
BQ27500DRZT-V120 BQ27500DRZT-V120 Buy Datasheet
BQ27500DRZT-V120G4 BQ27500DRZT-V120G4 Buy Datasheet
BQ27500DRZT-V130 BQ27500DRZT-V130 Buy Datasheet
BQ27500YZGR-V130 BQ27500YZGR-V130 Buy Datasheet
BQ27500YZGT-V130 BQ27500YZGT-V130 Buy Datasheet
BQ27501DRZR BQ27501DRZR Buy Datasheet
BQ27501DRZT BQ27501DRZT Buy Datasheet
BQ27505YZGR-J3 BQ27505YZGR-J3 Buy Datasheet
BQ27505YZGR-J5 BQ27505YZGR-J5 Buy Datasheet
BQ27505YZGT-J2 BQ27505YZGT-J2 Buy Datasheet
BQ27505YZGT-J3 BQ27505YZGT-J3 Buy Datasheet
BQ27505YZGT-J4 BQ27505YZGT-J4 Buy Datasheet
BQ27505YZGT-J5 BQ27505YZGT-J5 Buy Datasheet
BQ27510DRZR BQ27510DRZR Buy Datasheet
BQ27510DRZR-G1 BQ27510DRZR-G1 Buy Datasheet
BQ27510DRZRG4 BQ27510DRZRG4 Buy Datasheet
BQ27510DRZT BQ27510DRZT Buy Datasheet
BQ27510DRZT-G1 BQ27510DRZT-G1 Buy Datasheet
BQ27510DRZTG4 BQ27510DRZTG4 Buy Datasheet
BQ27520YZFR-G1 BQ27520YZFR-G1 Buy Datasheet
BQ27520YZFR-G2 BQ27520YZFR-G2 Buy Datasheet
BQ27520YZFR-G3 BQ27520YZFR-G3 Buy Datasheet
BQ27520YZFT-G1 BQ27520YZFT-G1 Buy Datasheet
BQ27530YZFR-G1 BQ27530YZFR-G1 Buy Datasheet
BQ27531YZFT-G1 BQ27531YZFT-G1 Buy Datasheet
BQ27541DRZR BQ27541DRZR Buy Datasheet
BQ27541DRZR-G1 BQ27541DRZR-G1 Buy Datasheet
BQ27541DRZR-V200 BQ27541DRZR-V200 Buy Datasheet
BQ27541DRZT BQ27541DRZT Buy Datasheet
BQ27541DRZT-G1 BQ27541DRZT-G1 Buy Datasheet
BQ27541DRZT-V200 BQ27541DRZT-V200 Buy Datasheet
BQ27546YZFR-G1 BQ27546YZFR-G1 Buy Datasheet
BQ27546YZFT-G1 BQ27546YZFT-G1 Buy Datasheet