Home Battery management ICs Battery fuel gauges
Home
Battery management ICs
Battery fuel gauges

BQ20Z40-R1

NOT RECOMMENDED FOR NEW DESIGNS

SBS 1.1 compliant Gas Gauge with Impedance Track™ Technology

Order now
Data sheet

BQ20Z40-R1

NOT RECOMMENDED FOR NEW DESIGNS
Data sheet Order now

Product details

Cell chemistry Li-Ion/Li-Polymer Number of series cells 2-4 Cells Communication interface SMBus Battery capacity (min) (mAh) 800 Battery capacity (max) (mAh) 32000 Implementation Pack External capacity indication LED Operating temperature range (°C) -40 to 85 Cell balancing Internal Rating Catalog
Cell chemistry Li-Ion/Li-Polymer Number of series cells 2-4 Cells Communication interface SMBus Battery capacity (min) (mAh) 800 Battery capacity (max) (mAh) 32000 Implementation Pack External capacity indication LED Operating temperature range (°C) -40 to 85 Cell balancing Internal Rating Catalog
TSSOP (PW) 20 41.6 mm² 6.5 x 6.4
  • Next Generation Patented Impedance Track™ Technology Accurately
    Measures Available Charge in Li-Ion and Li-Polymer Batteries
    • Better Than 1% Error Over the Lifetime of the Battery
  • Supports the Smart Battery Specification SBS V1.1
  • Flexible Configuration for 2-Series, 3-Series, and 4-Series
    Cell Li-Ion and Li-Polymer Batteries
  • Powerful 8-Bit RISC CPU With Ultralow Power Modes
  • Full Array of Programmable Protection Features
    • Voltage, Current, and Temperature
  • Complies with JEITA Guidelines
  • Added Flexibility to Handle More Complex Charging Profiles
  • Lifetime Data Logging
  • Supports SHA-1 Authentication
  • Available in 20-Pin TSSOP (PW) and 32-Pin QFN (RSM) Packages
  • APPLICATIONS
    • Notebook PCs
    • Medical and Test Equipment
    • Portable Instrumentation

Impedance Track is a trademark of Texas Instruments.
  • Next Generation Patented Impedance Track™ Technology Accurately
    Measures Available Charge in Li-Ion and Li-Polymer Batteries
    • Better Than 1% Error Over the Lifetime of the Battery
  • Supports the Smart Battery Specification SBS V1.1
  • Flexible Configuration for 2-Series, 3-Series, and 4-Series
    Cell Li-Ion and Li-Polymer Batteries
  • Powerful 8-Bit RISC CPU With Ultralow Power Modes
  • Full Array of Programmable Protection Features
    • Voltage, Current, and Temperature
  • Complies with JEITA Guidelines
  • Added Flexibility to Handle More Complex Charging Profiles
  • Lifetime Data Logging
  • Supports SHA-1 Authentication
  • Available in 20-Pin TSSOP (PW) and 32-Pin QFN (RSM) Packages
  • APPLICATIONS
    • Notebook PCs
    • Medical and Test Equipment
    • Portable Instrumentation

Impedance Track is a trademark of Texas Instruments.

The bq20z40-R1 SBS-compliant gas gauge and protection IC, incorporating patented Impedance Track™ technology, is designed for battery-pack or in-system installation. The bq20z40-R1 measures and maintains an accurate record of available charge in Li-Ion or Li-Polymer batteries using its integrated high-performance analog peripherals. Thebq20z40-R1 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 bq29330 analog front-end (AFE) protection IC to maximize functionality and safety, while minimizing external 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 the remaining capacity to be calculated with discharge rate, temperature, and cell aging, which are all accounted for during each stage of every cycle.

The bq20z40-R1 SBS-compliant gas gauge and protection IC, incorporating patented Impedance Track™ technology, is designed for battery-pack or in-system installation. The bq20z40-R1 measures and maintains an accurate record of available charge in Li-Ion or Li-Polymer batteries using its integrated high-performance analog peripherals. Thebq20z40-R1 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 bq29330 analog front-end (AFE) protection IC to maximize functionality and safety, while minimizing external 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 the remaining capacity to be calculated with discharge rate, temperature, and cell aging, which are all accounted for during each stage of every cycle.
filter Find other Battery fuel gauges
Download

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 1
Type Title Date
* Data sheet SBS 1.1-COMPLIANT GAS GAUGE ENABLED WITH IMPEDANCE TRACK™ datasheet (Rev. A) 24 Mar 2011

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
Information included:
  • Fab location
  • Assembly location