BQ2002 Status: ACTIVE

NiCd/NiMH Charge Controller with Negative dV and Peak Voltage Detection Termination

      
         
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Datasheet

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  • NiCD/NiMH Fast-Charge Management ICs (bq2002.pdf, 335 KB)
    05 Sep 1999 Download

 BQ2002
# Series CellsMultiple  
Charge Current(Max)(A)>2  
Charge Status Outputs1  
Control TopologyCurrent Limited  
Primary Charge Termination Method(-)dV, PVD  
Pin/Package8PDIP,8SOIC  
Vin(Max)(V)7  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

  • BQ2000: Switch-mode Multi-Chemistry Battery Charger with Peak Voltage Detection Termination
  • BQ2004: Switch-mode NiCd/NiMH Battery Charger w/Negative dV, Peak Voltage Detection, dT/dt Termination
  • BQ24400: Switch-mode NiCd/NiMH Battery Charger with Peak Voltage Detection Termination
  • TPS61040: 28-V, 400-mA Switch Boost Converter in SOT-23 for LCD and White LED Applications
  • TPS5430: 5.5V to 36V Input, 3-A Step Down Converter
  • TL431A: Adjustable Precision Shunt Regulator

More Related Products

Product Information

Features

  • Fast charge of nickel cadmium or nickel-metal hydride batteries
  • Direct LED output displays charge status
  • Fast-charge termination by -V, maximum voltage, maximum temperature, and maximum time
  • Internal band-gap voltage reference
  • Optional top-off charge
  • Selectable pulse trickle charge rates
  • Low-power mode
  • 8-pin 300-mil DIP or 150-mil SOIC

Description

The bq2002 and bq2002/F Fast-Charge ICs are low-cost CMOS battery-charge controllers providing reliable charge termination for both NiCd and NiMH battery applications. Controlling a current-limited or constant-current supply allows the bq2002/F to be the basis for a cost-effective stand-alone or system-integrated charger. The bq2002/F integrates fast charge with optional top-off and pulsed-trickle control in a single IC for charging one or more NiCd or NiMH battery cells.

Fast charge is initiated on application of the charging supply or battery replacement. For safety, fast charge is inhibited if the battery temperature and voltage are outside configured limits.

Fast charge is terminated by any of the following:

  • Peak voltage detection (PVD)
  • Negative delta voltage (-V)
  • Maximum voltage
  • Maximum temperature
  • Maximum time

After fast charge, the bq2002/F optionally tops-off and pulse-trickles the battery per the pre-configured limits. Fast charge may be inhibited using the INH pin. The bq2002/F may also be placed in low-standby-power mode to reduce system power consumption.

The bq2002F differs from the bq2002 only in that a slightly different set of fast-charge and top-off time limits is available. All differences between the two ICs are illustrated in Table 1.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
BQ2002PNACTIVE0 to 701.05 | 100uPDIP (P) | 8 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2002PNE4ACTIVE0 to 701.05 | 100uPDIP (P) | 8 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2002SNACTIVE0 to 701.05 | 100uSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2002SNG4ACTIVE0 to 701.05 | 100uSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2002SNTRACTIVE0 to 701.05 | 100uSOIC (D) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ2002SNTRG4ACTIVE0 to 701.05 | 100uSOIC (D) | 8 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

  TI Inventory Status Reported Distributor Inventory
BQ2002PNAs of 9:16 AM GMT, 12 Oct 2008As of 9:16 AM GMT, 12 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 >10k* >10k | 10 Nov 6 Weeks AmericasDigiKey 125
  Newark 45
  AsiaWPI 560
BQ2002PNE4As of 9:16 AM GMT, 12 Oct 2008As of 9:16 AM GMT, 12 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 >10k* >10k | 10 Nov 6 Weeks None Reported
View Distributors
   
BQ2002SNAs of 9:16 AM GMT, 12 Oct 2008As of 9:16 AM GMT, 12 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 10 Nov 6 Weeks AmericasArrow 166
  DigiKey 53
  Mouser Electronics 728
  Newark 267
  Rochester Electronics 77
  AsiaWPI 100
BQ2002SNG4As of 9:16 AM GMT, 12 Oct 2008As of 9:16 AM GMT, 12 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 10 Nov 6 Weeks EuropeEBV Elektronik 75
BQ2002SNTRAs of 9:16 AM GMT, 12 Oct 2008As of 9:16 AM GMT, 12 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 7777* >10k | 12 Nov 6 Weeks None Reported
View Distributors
   
BQ2002SNTRG4As of 9:16 AM GMT, 12 Oct 2008As of 9:16 AM GMT, 12 Oct 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 7777* >10k | 12 Nov 6 Weeks None 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
BQ2002PN RoHS Compliant Pb-Free (RoHS) CU NIPDAU N/A for Pkg TypeViewView
BQ2002PNE4 RoHS Compliant Pb-Free (RoHS) CU NIPDAU N/A for Pkg TypeViewView
BQ2002SN RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ2002SNG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ2002SNTR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ2002SNTRG4 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 TI Recommends - Technical Documentation TI Recommends

Datasheets

  • NiCD/NiMH Fast-Charge Management ICs (bq2002.pdf, 335 KB)
    05 Sep 1999 Download

Application Notes

  • Using the bqSWITCHER, bq24115, as a Nickel Charger (slua411.htm, 8 KB)
    05 Jan 2007 Abstract
  • 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

View Application Notes for Battery Charge Management

User Guides

  • bq2002 Selection Table (sluu229.pdf, 51 KB)
    30 Aug 2005 Download
  • DV2002L2/TL2 Fast Charge Development System Control of LM317 Linear Regulator (Rev. A) (sluu007a.pdf, 71 KB)
    28 Mar 1998 Download

View User Guides for Battery Charge Management

Tools & Software

NamePart # Company Tool / Software Type
Temp Sense Designer SoftwareTEMPSENSE-SWTexas InstrumentsAnalysis Software
BQ2002 Evaluation Module for NiCd/NiMH, Linear with -dV or Peak Voltage DetectDV2002L2Texas InstrumentsDevelopment Boards/EVMs

 Alternative Products - Are similar to BQ2002
Customers Who Evaluated This Product Also Evaluated...
Part #Name Comments
BQ2000Switch-mode Multi-Chemistry Battery Charger with Peak Voltage Detection TerminationTI customers also evaluated this product.
BQ2004Switch-mode NiCd/NiMH Battery Charger w/Negative dV, Peak Voltage Detection, dT/dt TerminationTI customers also evaluated this product.
BQ24400Switch-mode NiCd/NiMH Battery Charger with Peak Voltage Detection TerminationTI customers also evaluated this product.
BQ2002CNiCd/NiMH Charge Controller with Negative dV and Peak Voltage Detection TerminationTI customers also evaluated this product.
BQ2000TSwitch-mode Multi-Chemistry Battery Charger with dT/dt TerminationTI customers also evaluated this product.
 Complementary Products - Can be used with BQ2002
Customers Who Evaluated This Product Also Evaluated...
Part #NameProduct FamilyComments
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