Produktdetails

Number of series cells 2-4 Cells Communication interface SMBus Battery capacity (min) (mAh) 800 Battery capacity (max) (mAh) 15000 External capacity indication LED Features SHA-1 Authentication Operating temperature range (°C) -40 to 85 Rating Catalog
Number of series cells 2-4 Cells Communication interface SMBus Battery capacity (min) (mAh) 800 Battery capacity (max) (mAh) 15000 External capacity indication LED Features SHA-1 Authentication Operating temperature range (°C) -40 to 85 Rating Catalog
TSSOP (DBT) 38 62.08 mm² (9.7 mm × 6.4 mm)
  • Patented Impedance Track™ Technology Accurately Measures Available Charge in Li-Ion and Li-Polymer Batteries
  • Better than 1% Error Over Lifetime of the Battery
  • Instant Accuracy – No Learning Cycle Required
  • Supports the Smart Battery Specification SBS V1.1
  • Works With the TI bq29312A Analog Front-End (AFE) Protection IC to Provide Complete Pack Electronics Solution
  • Full Array of Programmable Voltage, Current, and Temperature Protection Features
  • Integrated Time Base Removes Need for External Crystal with Optional Crystal Input
  • Electronics for 7.2-V, 10.8-V or 14.4-V Battery Packs With Few External Components
  • Based on a Powerful Low-Power RISC CPU Core With High-Performance Peripherals
  • Integrated Field Programmable FLASH Memory Eliminates the Need for External Configuration Memory
  • Measures Charge Flow Using a High-Resolution, 16-Bit Integrating Delta-Sigma Converter
    • Better Than 0.65 nVh of Resolution
    • Self-Calibrating
    • Offset Error Less Than 1 µV
  • Uses 16-Bit Delta-Sigma Converter for Accurate Voltage and Temperature Measurements
  • Extensive Data Reporting Options For Improved System Interaction
  • Optional Pulse Charging Feature for Improved Charge Times
  • Drives 3-, 4- or 5-Segment LED Display for Remaining Capacity Indication
  • Supports SHA-1 Authentication
  • Lifetime Data Logging
  • 38-Pin TSSOP (DBT)
  • APPLICATIONS
    • Notebook PCs
    • Medical and Test Equipment
    • Portable Instrumentation

Impedance Track is a trademark of Texas Instruments.

  • Patented Impedance Track™ Technology Accurately Measures Available Charge in Li-Ion and Li-Polymer Batteries
  • Better than 1% Error Over Lifetime of the Battery
  • Instant Accuracy – No Learning Cycle Required
  • Supports the Smart Battery Specification SBS V1.1
  • Works With the TI bq29312A Analog Front-End (AFE) Protection IC to Provide Complete Pack Electronics Solution
  • Full Array of Programmable Voltage, Current, and Temperature Protection Features
  • Integrated Time Base Removes Need for External Crystal with Optional Crystal Input
  • Electronics for 7.2-V, 10.8-V or 14.4-V Battery Packs With Few External Components
  • Based on a Powerful Low-Power RISC CPU Core With High-Performance Peripherals
  • Integrated Field Programmable FLASH Memory Eliminates the Need for External Configuration Memory
  • Measures Charge Flow Using a High-Resolution, 16-Bit Integrating Delta-Sigma Converter
    • Better Than 0.65 nVh of Resolution
    • Self-Calibrating
    • Offset Error Less Than 1 µV
  • Uses 16-Bit Delta-Sigma Converter for Accurate Voltage and Temperature Measurements
  • Extensive Data Reporting Options For Improved System Interaction
  • Optional Pulse Charging Feature for Improved Charge Times
  • Drives 3-, 4- or 5-Segment LED Display for Remaining Capacity Indication
  • Supports SHA-1 Authentication
  • Lifetime Data Logging
  • 38-Pin TSSOP (DBT)
  • APPLICATIONS
    • Notebook PCs
    • Medical and Test Equipment
    • Portable Instrumentation

Impedance Track is a trademark of Texas Instruments.

The bq20z80 SBS-compliant gas gauge IC, incorporating patented Impedance Track™ technology, is designed for battery-pack or in-system installation. The bq20z80 measures and maintains an accurate record of available charge in Li-ion or Li-polymer batteries using its integrated high-performance analog peripherals. The bq20z80 monitors capacity change, battery impedance, open-circuit voltage, and other critical parameters of the battery pack, and reports the information to the system host controller over a serial-communication bus. It is designed to work with the bq29312A analog front-end (AFE) protection IC to maximize functionality and safety, and minimize component count and cost in smart battery circuits.

The Impedance Track technology continuously analyzes the battery impedance, resulting in superior gas-gauging accuracy. This enables remaining capacity to be calculated with discharge rate, temperature, and cell aging all accounted for during each stage of every cycle.

The bq20z80 SBS-compliant gas gauge IC, incorporating patented Impedance Track™ technology, is designed for battery-pack or in-system installation. The bq20z80 measures and maintains an accurate record of available charge in Li-ion or Li-polymer batteries using its integrated high-performance analog peripherals. The bq20z80 monitors capacity change, battery impedance, open-circuit voltage, and other critical parameters of the battery pack, and reports the information to the system host controller over a serial-communication bus. It is designed to work with the bq29312A analog front-end (AFE) protection IC to maximize functionality and safety, and minimize component count and cost in smart battery circuits.

The Impedance Track technology continuously analyzes the battery impedance, resulting in superior gas-gauging accuracy. This enables remaining capacity to be calculated with discharge rate, temperature, and cell aging all accounted for during each stage of every cycle.

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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt SBS 1.1-COMPLIANT GAS GAUGE ENABLED W/IMPEDANCE TRACK TECHNOLOGY FOR USE W/bq29 datasheet 26.07.2007
* Errata bq20z80-V110 Technical Reference Manual 05.04.2007
Benutzerhandbuch bqMTester User's Guide (Rev. C) 19.06.2020
Anwendungshinweis SMBus Made Simple PDF | HTML 09.11.2016
Anwendungshinweis Data Flash Programing and Calibrating the bq20zxx Family of Gas Gauges (Rev. E) 14.09.2013
Anwendungshinweis Thermistor Selection Guide for Texas Instruments Advanced Fuel Gauges 28.09.2011
Anwendungshinweis Cell Balancing Using the bq20zxx (Rev. C) 12.01.2011
Anwendungshinweis Production 2: Data Flash Programming/Calibrating the bq20z80 Gas Gauges (Rev. B) (Rev. B) 12.01.2010
Anwendungshinweis Design 4: Support of Multiple Li-Ion Chemistries w/Impedance Track(TM) Gas Gauge (Rev. R) 15.10.2009
Anwendungshinweis Data Flash Programming Using the EV Software. (Rev. A) 27.07.2009
Anwendungshinweis Fast Cell Balancing Using External MOSFET (Rev. A) 26.01.2009
Anwendungshinweis Information to Provide When Reporting Issues With TI Gauges 18.07.2008
Anwendungshinweis Cell-type Specific Settings for Cell Imbalance Permanent Failure Thresholds 28.09.2007
Anwendungshinweis Quick-Start Guide for bq20zxx Family Gas Gauges (Rev. A) 04.09.2007
Anwendungshinweis Evaluation 3: Theory/Implementation Impedance Track Battery Fuel-Gauging Algo (Rev. B) 20.12.2006
Anwendungshinweis Evaluation 7: Preparing Optimized Data Flash Constants (Rev. B) 04.12.2006
Anwendungshinweis Pack Assembly and the bq20zxx (Rev. B) 07.11.2006
Anwendungshinweis bq20z80 EVM Data Flash Settings for Num of Serial Cells/Pack Cap (Rev. B) 06.11.2006
Anwendungshinweis Thermistor Coefficient Calculator for TI Advanced Fuel Gauges 04.10.2006
Benutzerhandbuch Using bqTester Single Site Software (Rev. A) 01.09.2006
Anwendungshinweis Battery Pack Production Flow With bq20zXX 02.08.2006
Anwendungshinweis bq20z80 Printed Circuit Board Layout Guide 16.06.2006
Anwendungshinweis Configuring the bq20z80 Data Flash 15.06.2006
Anwendungshinweis bq20z80 Application Book 15.06.2006
Anwendungshinweis Data Flash Programming Using the EV Software 15.06.2006
Anwendungshinweis Production Flow With bq20z80 Gas Gauges 15.06.2006
Anwendungshinweis Support of Multiple Chemistries 15.06.2006
Anwendungshinweis Exploring the bq20z80 Impedance Track Evaluation Kit (Rev. A) 14.06.2006
Anwendungshinweis bq20z80 Printed Circuit Board Layout Guide 28.03.2006
Anwendungshinweis Impedance Track(TM) Gas Gauge for Novices 30.01.2006
Anwendungshinweis Evaluation 1: Feature Set Comparison Between bq2084 and bq20z80 29.11.2005
Anwendungshinweis Evaluation 6: Using SHA-1 in bq20zxx Family of Gas Gauges 19.11.2005
Anwendungshinweis bq20Z80-v101 to bq20z80-V102 Change List 17.11.2005
Anwendungshinweis Design 1: bq20z80 and bq2084 Gas Gauge Circuit Design 14.11.2005
Anwendungshinweis Design 2: Avoiding ESD and EMI Problems in bq20zxx Battery Pack Electronics 11.11.2005
Anwendungshinweis Design 3: Configuring the bq20z80 Data Flash 10.11.2005

Design und Entwicklung

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Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
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