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BQ20Z45 Status: ACTIVE

SBS 1.1 compliant Gas Gauge with Impedance Track Technology and Advanced Charging Algorithm


      
         
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Datasheet

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 BQ20Z40 BQ20Z45
Battery Capacity(Min)(mAh)800  800  
Battery Capacity(Max)(mAh)15000  15000  
Communication InterfaceSMBus  SMBus  
# Series Cells2,3,4  2,3,4  
Pin/Package20TSSOP  38TSSOP  
Approx. Price (US$) 3.40 | 1ku   4.40 | 1ku  
 SamplesSamples
 InventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • BQ20Z40: SBS Compliant Gas Gauge with Impedance Track Technology for use with BQ29330
  • BQ20Z75-V160: SBS 1.1-Compliant Gas Gauge and Protection-Enabled IC with Impedance Track(TM)
  • BQ78PL114: PowerLAN Gateway Battery Management Controller with PowerPump Cell Balancing
  • BQ29330: Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE
  • BQ77PL900: 5-10 cell Li-ion Battery protection & AFE
  • TPS61081: 27V, 1.2A switch, 1.2MHz Boost Converter with integrated power diode

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Product Information

Features

  • 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 to 4 Series Li-Ion and Li-Polymer Cells
  • Powerful 8-Bit RISC CPU With Ultralow Power Modes
  • Full Array of Programmable Protection Features
    • Voltage, Current, and Temperature
  • Satisfies JEITA Guidelines
  • Added Flexibility to Handle More Complex Charging Profiles
  • Lifetime Data Logging
  • Supports SHA-1 Authentication
  • Complete Battery Protection and Gas Gauge Solution in One Package
  • Available in a 38-Pin TSSOP (DBT) package
  • APPLICATIONS
    • Notebook PCs
    • Medical and Test Equipment
    • Portable Instrumentation

Impedance Track is a trademark of Texas Instruments.

Description

The bq20z45 SBS-compliant gas gauge and protection IC is a single IC solution designed for battery-pack or in-system installation. The bq20z45 measures and maintains an accurate record of available charge in Li-ion or Li-polymer batteries using its integrated high-performance analog peripherals, monitors capacity change, battery impedance, open-circuit voltage, and other critical parameters of the battery pack as well and reports the information to the system host controller over a serial-communication bus. Together with the integrated analog front-end (AFE) short-circuit and overload protection, the bq20z45 maximizes functionality and safety while minimizing external component count, cost, and size in smart battery circuits.

The implemented Impedance Track™ gas gauging 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 with high accuracy.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSamples
BQ20Z45DBTACTIVE-40 to 854.40 | 1kuTSSOP (DBT) | 38 View 50 | TUBE
BQ20Z45DBTRACTIVE-40 to 854.40 | 1kuTSSOP (DBT) | 38 View 2000 | LARGE T&RPurchase Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 12:08 PM GMT, 08 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksBQ20Z45DBT
None Reported
View Distributors
TI Lead Time*: 20 WeeksBQ20Z45DBTR
None Reported
View Distributors
View all Distributors  

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
BQ20Z45DBT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ20Z45DBTR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for BQ20Z45 Help

Datasheet

Application Notes

View Application Notes for Battery Fuel Gauges

User Guides

Errata

Tools & Software

NamePart # Company Tool / Software Type
BQ20z45EVM-001 SBS 1.1 Impedance Track™ Tech Enabled Battery Mgmt Solution KitBQ20Z45EVM-001Texas InstrumentsDevelopment Boards/EVMs

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