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BQ20Z90 Status: NRND

SBS 1.1 Compliant Gas Gauge Enabled w/Impedance Track Tech For bq29330


      
         
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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:

  • BQ20Z90-V150 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

  • 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
  • Automatically adjusts for battery aging, battery self discharge and temperature inefficiencies
  • Supports the Smart Battery Specification SBS V1.1
  • Works With the TI bq29330 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 50% Fewer 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
  • 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
  • 30-Pin TSSOP (DBT)
  • APPLICATIONS
    • Notebook PCs
    • Medical and Test Equipment
    • Portable Instrumentation

IMPEDANCE TRACK is a trademark of Texas Instruments.

Description

The bq20z90 SBS-compliant gas gauge IC, incorporating patented Impedance Track™ technology, is designed for battery-pack or in-system installation. The bq20z90 measures and maintains an accurate record of available charge in Li-ion or Li-polymer batteries using its integrated high-performance analog peripherals. The bq20z90 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. This enables remaining capacity to be calculated with discharge rate, temperature, and cell aging all accounted for during each stage of every cycle.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
BQ20Z90DBTNRND-40 to 854.75 | 1kuTSSOP (DBT) | 30 View 60 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintNot Available
BQ20Z90DBTG4NRND-40 to 854.75 | 1kuTSSOP (DBT) | 30 View 60 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintNot Available
BQ20Z90DBTRNRND-40 to 854.30 | 1kuTSSOP (DBT) | 30 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintNot Available
BQ20Z90DBTRG4NRND-40 to 854.30 | 1kuTSSOP (DBT) | 30 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 12:07 PM GMT, 08 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 4 WeeksBQ20Z90DBT
AmericasArrow 480
Newark 19
Rochester Electronics 812
AsiaFarnell Asia 19
WorldwideDigiKey 91
Mouser Electronics 116
TI Lead Time*: 4 WeeksBQ20Z90DBTG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksBQ20Z90DBTR
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksBQ20Z90DBTRG4
WorldwideDigiKey  Available
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
BQ20Z90DBT  Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ20Z90DBTG4  Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ20Z90DBTR  Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ20Z90DBTRG4  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 BQ20Z90 Help

Datasheet

Application Notes

View Application Notes for Battery Fuel Gauges

User Guides

Solution Guides

Errata

Tools & Software

NamePart # Company Tool / Software Type
BQ20Z90EVM Evaluation Module for 2nd Generation Impedance Track(TM)BQ20Z90EVM-001Texas InstrumentsDevelopment Boards/EVMs
BQMTESTER Multi Channel Test and Program BoardBQMTESTERTexas InstrumentsDevelopment Boards/EVMs
Single Channel TesterBQTESTERTexas InstrumentsDevelopment Boards/EVMs

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