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BQ20Z70 Status: NRND

SBS 1.1 Compliant Gas Gauge Enabled w/Impedance Track Tech For bq29330 no LEDs


      
         
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Alert Icon   NRND: This product is not recommended for new designs. However, the device, tool, or software continues to be in production to support existing customers. TI does not recommend using this part in a new design. TI encourages designers to consider alternative products for new designs.

Replaced By:

  • BQ20Z70-V160 The device has the SAME FUNCTIONALITY and PINOUT as the compared device but is NOT an exact equivalent. 

Datasheet

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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 Lifetime of the Battery
  • Instant Accuracy – No Learning Cycle Required
  • Supports the Smart Battery Specification SBS V1.1
  • Powerful 8-Bit RISC CPU With Ultra-Low Power Modes
  • Works With the TI bq29330 Analog Front-End (AFE) Protection IC to Provide Complete Pack Electronics Solution
  • Full Array of Programmable Protection Features
    • Voltage, Current and Temperature
  • Fully Integrated High Accurate Clock
  • Flexible Configuration for 2 to 4 Series Li-Ion and Li-Polymer Cells
  • Integrated Field Programmable FLASH Memory Eliminates the Need for External Configuration Memory
  • Smart Battery Charger Control Feature
  • Two 16-Bit Delta-Sigma Converter
    • Accurate Voltage and Temperature Measurements
    • Integrating Coloumb Counter for Charge Flow
      • Better Than 0.65 nVh of Resolution
      • Self-Calibrating
  • Supports SHA-1 Authentication
  • 20-Pin TSSOP (PW)
  • APPLICATIONS

View All Features in Datasheet

Description

The bq20z70 SBS-compliant gas gauge IC, incorporating patented Impedance Track™ technology, is designed for battery-pack or in-system installation. The bq20z70 measures and maintains an accurate record of available charge in Li-ion or Li-polymer batteries using its integrated high-performance analog peripherals. The bq20z70 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, 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.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
BQ20Z70PWNRND-40 to 854.55 | 1kuTSSOP (PW) | 20 View 70 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintNot Available
BQ20Z70PWG4NRND-40 to 854.55 | 1kuTSSOP (PW) | 20 View 70 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintNot Available
BQ20Z70PWRNRND-40 to 854.10 | 1kuTSSOP (PW) | 20 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintNot Available
BQ20Z70PWRG4NRND-40 to 854.10 | 1kuTSSOP (PW) | 20 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintNot Available

* 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 12:15 PM GMT, 20 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksBQ20Z70PW
AmericasRochester Electronics 70
EuropeAvnet-SILICA 420
TI Lead Time*: 20 WeeksBQ20Z70PWG4
None Reported
View Distributors
TI Lead Time*: 20 WeeksBQ20Z70PWR
None Reported
View Distributors
TI Lead Time*: 20 WeeksBQ20Z70PWRG4
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
BQ20Z70PW  Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ20Z70PWG4  Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ20Z70PWR  Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ20Z70PWRG4  Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView

* 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 BQ20Z70 Help

Datasheet

Application Notes

View Application Notes for Battery Fuel Gauges

User Guides

Errata

Tools & Software

NamePart # Company Tool / Software Type
BQ20Z70EVM Evaluation Module for 2nd Generation Impedance Track(TM)BQ20Z70EVM-001Texas InstrumentsDevelopment Boards/EVMs
BQMTESTER Multi Channel Test and Program BoardBQMTESTERTexas InstrumentsDevelopment Boards/EVMs
Single Channel TesterBQTESTERTexas InstrumentsDevelopment Boards/EVMs

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