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BQ2031 Status: ACTIVE

Switch-mode Lead-Acid Battery Charger with User-Selectable Charge Algorithms


      
         
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Datasheet

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 BQ2031
# Series CellsMultiple  
Charge Current(Max)(A)>2  
Charge Status Outputs3  
Control TopologySwitchmode  
Switching Frequency(kHz)100  
Primary Charge Termination MethodMaximum Voltage, (-)d2V, Minimum Current  
Pin/Package16PDIP, 16SOIC  
Vin(Max)(V)7  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

  • UC3909: Switch-mode Lead-Acid Battery Charger with Differential Current Sense
  • UC3906: Linear Lead-Acid Battery Charger
  • BQ24450: Integrated Charge Controller for Lead-Acid Batteries
  • TPS40210: Wide Input Range Current Mode Boost Controller

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Product Information

Features

  • Conforms to battery manufacturers' charge recommendations for cyclic and float charge
  • Pin-selectable charge algorithms

    • - Two-Step Voltage with temperature-compensated constant-voltage maintenance
    - Two-Step Current with constant-rate pulsed current maintenance
    - Pulsed Current: hysteretic, on-demand pulsed current
  • Pin-selectable charge termination by maximum voltage, 2V, minimum current, and maximum time
  • Pre-charge qualification detects shorted, opened, or damaged cells and conditions battery
  • Charging continuously qualified by temperature and voltage limits
  • Internal temperature-compensated voltage reference
  • Pulse-width modulation control

    • - Ideal for high-efficiency switch-mode power conversion
    - Configurable for linear or gated current use
  • Direct LED control outputs display charge status and fault conditions

Description

The bq2031 Lead-Acid Fast Charge IC is designed to optimize charging of lead-acid chemistry batteries. A flexible pulse-width modulation regulator allows the bq2031 to control constant-voltage, constant-current, or pulsed-current charging. The regulator frequency is set by an external capacitor for design flexibility. The switch-mode design keeps power dissipation to a minimum for high charge current applications.

A charge cycle begins when power is applied or the battery is replaced. For safety, charging is inhibited until the battery voltage is within configured limits. If the battery voltage is less than the low-voltage threshold, the bq2031 provides trickle-currentcharging until the voltage rises into the allowed range or an internal timer runs out and places the bq2031 in a Fault condition.

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Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
BQ2031PN-A5ACTIVE-20 to 702.80 | 1kuPDIP (N) | 16 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2031PN-A5E4ACTIVE-20 to 702.80 | 1kuPDIP (N) | 16 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2031SN-A5ACTIVE-20 to 703.10 | 1kuSOIC (D) | 16 View 40 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2031SN-A5G4ACTIVE-20 to 703.10 | 1kuSOIC (D) | 16 View 40 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2031SN-A5TRACTIVE-20 to 702.80 | 1kuSOIC (D) | 16 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ2031SN-A5TRG4ACTIVE-20 to 702.80 | 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 12:16 PM GMT, 20 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 14 WeeksBQ2031PN-A5
AmericasNewark 74
Rochester Electronics 6
AsiaWPI 72
EuropeSpoerle 25
WorldwideDigiKey 155
Mouser Electronics 45
TI Lead Time*: 14 WeeksBQ2031PN-A5E4
None Reported
View Distributors
TI Lead Time*: 20 WeeksBQ2031SN-A5
AmericasArrow 115
Avnet 417
Newark 392
AsiaFarnell Asia 906
EuropeAvnet-SILICA 30
Spoerle 80
WorldwideDigiKey >1k
Mouser Electronics 115
TI Lead Time*: 20 WeeksBQ2031SN-A5G4
AmericasAvnet 60
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksBQ2031SN-A5TR
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksBQ2031SN-A5TRG4
AmericasAvnet >1k
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
BQ2031PN-A5 RoHS Compliant Pb-Free (RoHS) CU NIPDAU N/A for Pkg TypeViewView
BQ2031PN-A5E4 RoHS Compliant Pb-Free (RoHS) CU NIPDAU N/A for Pkg TypeViewView
BQ2031SN-A5 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ2031SN-A5G4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ2031SN-A5TR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ2031SN-A5TRG4 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

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Datasheet

Application Notes

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User Guides

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Tools & Software

NamePart # Company Tool / Software Type
Temp Sense Designer SoftwareTEMPSENSE-SWTexas InstrumentsAnalysis Software
Evaluation Module for Lead Acid, switchmode BQ2031DV2031S2Texas InstrumentsDevelopment Boards/EVMs
Quick Search Selection Tool for Battery ChargersBATTERY_CHARGERS_SELECTION_TOOLTexas InstrumentsFree Evaluation Tools

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
UC3909 Switch-mode Lead-Acid Battery Charger with Differential Current Sense BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
UC3906 Linear Lead-Acid Battery Charger BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24450 Integrated Charge Controller for Lead-Acid Batteries BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24105 Standalone Synchronous Switch-Mode Li-Ion Charger w/2A FET in QFN-20, 1 to 3 Cells BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
UC2906 Linear Lead-Acid Battery Charger BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
UC2909 Switch-mode Lead-Acid Battery Charger with Differential Current Sense BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ2000 Switch-mode Multi-Chemistry Battery Charger with Peak Voltage Detection Termination BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24741 Multi-Cell Synchronous Switch-mode Charger With Low Iq and Accurate Trickle Charge BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
UCC3956 Switch-mode Lead-Acid Battery Charger with Differential Current Sense BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
TPS40210 Wide Input Range Current Mode Boost Controller NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.

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