SBS 1.1-compliant gas gauge enabled w/Impedance Track™ technology

BQ20Z80-V102

ACTIVE

Product details

We are not able to display this information. Please refer to the product data sheet .
TSSOP (DBT) 38 43 mm² 4.4 x 9.7
  • 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.

Download

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 33
Type Title Date
* Data sheet SBS 1.1-Compliant Gas Gauge Enabled w/Impedance Track Tech datasheet (Rev. B) 23 Jan 2007
* Errata bq20z80-V102 Technical Reference (Rev. A) 03 Mar 2006
User guide bqMTester User's Guide (Rev. C) 19 Jun 2020
User guide bq20z80EVM-001 SBS 1.1 Impedance Track Tech Enabled Batt Mgmt Solution EVM (Rev. B) 04 Oct 2013
Application note Cell Balancing Using the bq20zxx (Rev. C) 12 Jan 2011
Application note Production 2: Data Flash Programming/Calibrating the bq20z80 Gas Gauges (Rev. B) (Rev. B) 12 Jan 2010
Application note Design 4: Support of Multiple Li-Ion Chemistries w/Impedance Track(TM) Gas Gauge (Rev. R) 15 Oct 2009
Application note Fast Cell Balancing Using External MOSFET (Rev. A) 26 Jan 2009
Application note Cell-type Specific Settings for Cell Imbalance Permanent Failure Thresholds 28 Sep 2007
Application note Quick-Start Guide for bq20zxx Family Gas Gauges (Rev. A) 04 Sep 2007
Application note Evaluation 3: Theory/Implementation Impedance Track Battery Fuel-Gauging Algo (Rev. B) 20 Dec 2006
Application note Evaluation 7: Preparing Optimized Data Flash Constants (Rev. B) 04 Dec 2006
Application note Pack Assembly and the bq20zxx (Rev. B) 07 Nov 2006
Application note bq20z80 EVM Data Flash Settings for Num of Serial Cells/Pack Cap (Rev. B) 06 Nov 2006
Application note Thermistor Coefficient Calculator for TI Advanced Fuel Gauges 04 Oct 2006
User guide Using bqTester Single Site Software (Rev. A) 01 Sep 2006
Application note Battery Pack Production Flow With bq20zXX 02 Aug 2006
Application note bq20z80 Printed Circuit Board Layout Guide 16 Jun 2006
Application note Configuring the bq20z80 Data Flash 15 Jun 2006
Application note Data Flash Programming Using the EV Software 15 Jun 2006
Application note Production Flow With bq20z80 Gas Gauges 15 Jun 2006
Application note Support of Multiple Chemistries 15 Jun 2006
Application note bq20z80 Application Book 15 Jun 2006
Application note Exploring the bq20z80 Impedance Track Evaluation Kit (Rev. A) 14 Jun 2006
Application note Impedance Track(TM) Gas Gauge for Novices 30 Jan 2006
Application note Evaluation 1: Feature Set Comparison Between bq2084 and bq20z80 29 Nov 2005
Application note Evaluation 2: Exploring the bq20z80 Impedance Track Evaluation Kit 27 Nov 2005
Application note Evaluation 3: Theory/Implementation Impedance Track Battery Fuel-Gauging Algo 25 Nov 2005
Application note Evaluation 6: Using SHA-1 in bq20zxx Family of Gas Gauges 19 Nov 2005
Application note bq20Z80-v101 to bq20z80-V102 Change List 17 Nov 2005
Application note Design 1: bq20z80 and bq2084 Gas Gauge Circuit Design 14 Nov 2005
Application note Design 2: Avoiding ESD and EMI Problems in bq20zxx Battery Pack Electronics 11 Nov 2005
Application note Design 3: Configuring the bq20z80 Data Flash 10 Nov 2005

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

ADVANCED-BQMTESTER — Texas Instruments Advanced bqMTester Multi-Station Test and Program Board

The Texas Instruments Advanced bqMTester Multi-Station Test and Program Board is designed to calibrate and program electronic smart battery modules based on the latest Texas Instruments advanced battery gas gauges (BQ20z40 (...)

In stock
Limit: 1
Evaluation board

BQMTESTER — BQMTESTER Multi Channel Test and Program Board

The bqMTester from Texas Instruments is designed to calibrate and program electronic smart battery modules based on the bq20zxx and bq30zxx family of devices utilizing the patented Impedance Track ™ technology. The bqMTester software works in conjunction with the bqMTester HPA169 calibration board  (...)

In stock
Limit: 3
Evaluation board

MKST-3P-ALT-EV2300 — MKS Technology alternative for EV2300 communications transceiver

This solution, available from MKS Technology, is an alternative for the EV2300 communications transceiver. The solution from MKS Technology has been validated and works with both the BQMTESTER and ADVANCED-BQMTESTER. It has been validated and works with bq Evaluation software (bqEVSW). Using the MKS (...)

From: MKS Technology Inc
Support software

bq20z80 Multiple Li-Ion Chemistries Software (Rev. C)

SLUC058C.ZIP (73 KB)
Support software

Gas Gauge Chemistry Updater Setup v7.82 (Rev. HY)

SLUC261HY.ZIP (496964 KB)
CAD/CAE symbol

Mathcad Chemistry Selection Tool (Rev. DJ)

SLUC138DJ.ZIP (6840 KB)
Package Pins Download
TSSOP (DBT) 38 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos