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BQ2005 Status: ACTIVE

Switch-mode NiCd/NiMH Battery Charger for Sequential Charging Of Dual Battery Packs

      
         
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Datasheet

Download - PDF Icon
  • Fast-Charge IC for Dual-Battery Packs (Rev. A) (bq2005.pdf, 125 KB)
    25 Jul 2000 Download

 BQ2005
# Series CellsMultiple  
Charge Current(Max)(A)>2  
Charge Status Outputs4  
Control TopologySwitchmode  
Switching Frequency(kHz)300  
Primary Charge Termination Method(-)dV, dT/dt  
Pin/Package20SOIC  
Vin(Max)(V)7  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

  • BQ2004: Switch-mode NiCd/NiMH Battery Charger w/Negative dV, Peak Voltage Detection, dT/dt Termination
  • BQ2002: NiCd/NiMH Charge Controller with Negative dV and Peak Voltage Detection Termination
  • BQ24702: Multi-Chemistry Battery Charge Controller and System Power Selector

Product Information

Features

  • Sequential fast charge and conditioning of two NiCd or NiMH nickel cadmium or nickel-metal hydride battery packs
  • Hysteretic PWM switch-mode current regulation or gated control of an external regulator
  • Easily integrated into systems or used as a stand-alone charger
  • Pre-charge qualification of temperature and voltage
  • Direct LED outputs display battery and charge status
  • Fast-charge termination by V, maximum voltage, maximum temperature, and maximum time
  • Optional top-off and pulse-trickle charging

Description

The bq2005 Fast-Charge IC provides comprehensive fast charge control functions together with high-speed switching power control circuitry on a monolithic CMOS device for sequential charge management in dual battery pack applications.

Integration of closed-loop current control circuitry allows the bq2005 to be the basis of a cost-effective solution for stand-alone and system-integrated chargers for batteries of one or more cells.

Switch-activated discharge-before-charge allows bq2005-based chargers to support battery conditioning and capacity determination.

High-efficiency power conversion is accomplished using the bq2005 as a hysteretic PWM controller for switch-mode regulation of the charging current. The bq2005 may alternatively be used to gate an externally regulated charging current.

Fast charge may begin on application of the charging supply, replacement of the battery, or switch depression. For safety, fast charge is inhibited unless/until the battery temperature and voltage are within configured limits.

Temperature, voltage, and time are monitored throughout fast charge. Fast charge is terminated by any of the following:

  • Rate of temperature rise (t)
  • Negative delta voltage (-V)
  • Maximum voltage
  • Maximum temperature
  • Maximum time

After fast charge, optional top-off and pulsed current maintenance phases are available.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
BQ2005PNOBSOLETE-20 to 70 PDIP (N) | 20 View    Download CAD Format for this FootprintNot Available
BQ2005SACTIVE-20 to 702.75 | 100uSOIC (DW) | 20 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2005SG4ACTIVE-20 to 702.75 | 100uSOIC (DW) | 20 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2005STRACTIVE-20 to 702.75 | 100uSOIC (DW) | 20 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ2005STRG4ACTIVE-20 to 702.75 | 100uSOIC (DW) | 20 View 2000 | LARGE T&R  Purchase 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

  TI Inventory Status Reported Distributor Inventory
BQ2005PNAs of 10:16 AM GMT, 19 Nov 2008As of 10:16 AM GMT, 19 Nov 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0*  Call**AmericasRochester Electronics >1k
BQ2005SAs of 10:16 AM GMT, 19 Nov 2008As of 10:16 AM GMT, 19 Nov 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 300*  1 Weeks AmericasArrow 174
  DigiKey 111
  Mouser Electronics 63
  Newark 25
  Rochester Electronics >1k
  AsiaWPI 60
BQ2005SG4As of 10:16 AM GMT, 19 Nov 2008As of 10:16 AM GMT, 19 Nov 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 300* 1 WeeksNone Reported
View Distributors		   
BQ2005STRAs of 10:16 AM GMT, 19 Nov 2008As of 10:16 AM GMT, 19 Nov 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* 20 WeeksNone Reported
View Distributors		   
BQ2005STRG4As of 10:16 AM GMT, 19 Nov 2008As of 10:16 AM GMT, 19 Nov 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* 20 WeeksNone Reported
View Distributors		   
View all Distributors  

* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.

** 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
BQ2005S  TBD Call TI Call TIViewView
BQ2005SG4  TBD Call TI Call TIViewView
BQ2005STR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ2005STRG4 RoHS Compliant 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

Datasheets

  • Fast-Charge IC for Dual-Battery Packs (Rev. A) (bq2005.pdf, 125 KB)
    25 Jul 2000 Download

Application Notes

  • Battery Charger Termination Issues With System Load Applied Across Battery (Rev. A) (slva166a.htm, 8 KB)
    02 Oct 2006 Abstract
  • Battery Charger Termination Issues With System Load Applied Across Battery (slva166.htm, 8 KB)
    21 Apr 2004 Abstract
  • U-507 Using the bq2005 to Control Fast Charge (slua010.htm, 8 KB)
    05 Sep 1999 Abstract

View Application Notes for Battery Charge Management

User Guides

  • DV2005S3 Nickel/Li-Ion Development System Control of On-Board PNP Switch-Mode (sluu020.htm, 9 KB)
    05 Sep 1999 Abstract
  • DV2005S1 Fast Charge Development System Control of On-Board P-FET Switch-Mode (sluu019.htm, 9 KB)
    05 Sep 1999 Abstract
  • DV2005L1 Fast Charge Development System Control of PNP Power Transistor (sluu018.htm, 9 KB)
    05 Sep 1999 Abstract

View User Guides for Battery Charge Management

 Alternative Products - Are similar to BQ2005
Customers Who Evaluated This Product Also Evaluated...
Part #Name Comments
BQ2004Switch-mode NiCd/NiMH Battery Charger w/Negative dV, Peak Voltage Detection, dT/dt TerminationTI customers also evaluated this product.
BQ2002NiCd/NiMH Charge Controller with Negative dV and Peak Voltage Detection TerminationTI customers also evaluated this product.
BQ24702Multi-Chemistry Battery Charge Controller and System Power SelectorTI customers also evaluated this product.

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