BQ2050 Status: ACTIVE

Li-Ion Gas Gauge With 1-Wire (DQ) Interface And 5 LED Drivers


      
         
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Datasheet

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 BQ2050
Battery Capacity(Min)(mAh)500  
Battery Capacity(Max)(mAh)6000  
Communication InterfaceDQ  
Pin/Package16SOIC  
Approx. Price (US$) 3.85 | 1ku  
 Samples
 Inventory

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  • BQ2019: FLASH-Based Precision Multi-Chemistry Charge/Discharge Counter W/High-Speed 1-Wire I/F (HDQ)
  • BQ77PL900: 5-10 cell Li-ion Battery protection & AFE

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Product Information

Features

  • Conservative and repeatable measurement of available capacity in Lithium Ion rechargeable batteries
  • Designed for battery pack integration
    • 120µA typical operating current
    • Small size enables implementations in as little as ½ square inch of PCB
  • Integrate within a system or as a stand-alone device
    • Display capacity via single-wire serial communication port or direct drive of LEDs
  • Measurements compensated for current and temperature
  • Self-discharge compensation using internal temperature sensor
  • 16-pin narrow SOIC

Description

The bq2050 Lithium Ion Power Gauge™ IC is intended for battery-pack or in-system installation to maintain an accurate record of available battery capacity. The IC monitors a voltage drop across a sense resistor connected in series between the negative battery terminal and ground to determine charge and discharge activity of the battery. Compensations for battery temperature and rate of charge or discharge are applied to the charge, discharge, and self-discharge calculations to provide available capacity information across a wide range of operating conditions. Battery capacity is automatically recalibrated, or "learned," in the course of a discharge cycle from full to empty.

Nominal available capacity may be directly indicated using a five-segment LED display. These segments are used to graphically indicate available capacity. The bq2050 supports a simple single-line bidirectional serial link to an external processor (common ground). The bq2050 outputs battery information in response to external commands over the serial link.

The bq2050 may operate directly from one cell (VBAT > 3V). With the REF output and an external transistor, a simple, inexpensive regulator can be built for systems with more than one series cell.

Internal registers include available capacity, temperature, scaled available energy, battery ID, battery status, and programming pin settings. To support subassembly testing, the outputs may also be controlled. The external processor may also overwrite some of the bq2050 power gauge data registers.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
BQ2050SN-D119ACTIVE0 to 704.20 | 1kuSOIC (D) | 16 View 40 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2050SN-D119G4ACTIVE0 to 704.20 | 1kuSOIC (D) | 16 View 40 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2050SN-D119TRACTIVE0 to 703.85 | 1kuSOIC (D) | 16 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ2050SN-D119TRG4ACTIVE0 to 703.85 | 1kuSOIC (D) | 16 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase 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*: 14 WeeksBQ2050SN-D119
AmericasAvnet 400
Rochester Electronics >1k
WorldwideDigiKey >1k
Mouser Electronics 145
TI Lead Time*: 14 WeeksBQ2050SN-D119G4
WorldwideDigiKey  Available
TI Lead Time*: 14 WeeksBQ2050SN-D119TR
AmericasAvnet >1k
WorldwideDigiKey  Available
TI Lead Time*: 14 WeeksBQ2050SN-D119TRG4
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
BQ2050SN-D119 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ2050SN-D119G4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ2050SN-D119TR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ2050SN-D119TRG4 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 BQ2050 Help

Datasheet

Application Notes

View Application Notes for Battery Fuel Gauges

User Guides

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