TI Home > Semiconductors > Power Management > Battery Management > Battery Charge Management >

BQ2954 Status: ACTIVE

Switch-mode Li-Ion Charge Controller


      
         
Alert me about changes<br/>to this product

 BQ2954
# Series CellsMultiple  
Charge Current(Max)(A)>2  
Charge Status Outputs2  
Control TopologySwitchmode  
Switching Frequency(kHz)100  
Primary Charge Termination MethodMinimum Current  
Pin/Package16PDIP, 16SOIC  
Vin(Max)(V)7  
Battery Charge Voltage(V)adjustable  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

  • BQ24702: Multi-Chemistry Battery Charge Controller and System Power Selector
  • BQ24703: Multi-Chemistry Battery Charge Controller and System Power Selector
  • BQ24100: Standalone Synchronous Switch-mode Li-Ion Charger w/2A FET in QFN-20, 1-Cell
  • BQ77PL900: 5-10 cell Li-ion Battery protection & AFE
  • BQ78PL114: PowerLAN Gateway Battery Management Controller with PowerPump Cell Balancing
  • BQ29330: Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE

More Related Products

Product Information

Features

  • Safe charge of Li-Ion battery packs
  • Pulse-width modulation control for current and voltage regulation
  • Programmable high-side/low-side current-sense
  • Fast charge terminated by selectable minimum current; safety backup termination at maximum time
  • Precharge qualification detects shorted or damaged cells and conditions battery
  • Charging continuously qualified by temperature and voltage limits
  • Direct LED control outputs to display charge status and fault conditions

Description

The bq2954 Li-Ion Charge-Management IC uses a flexible pulse-width modulation regulator to control voltage and current during charging. The regulator frequency is set by an external capacitor for design flexibility. The switch-mode design minimizes power dissipation.

For safety, the bq2954 inhibits fast charging until the battery voltage and temperature are within configured limits. If the battery voltage is less than the low-voltage threshold, the bq2954 provides low-current conditioning of the battery.

For charge qualification, the bq2954 uses an external thermistor to measure battery temperature. Charging begins when power is applied or the battery is inserted

The bq2954 charges a battery in two phases.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
BQ2954PNACTIVE0 to 702.00 | 1kuPDIP (N) | 16 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2954PNE4ACTIVE0 to 702.00 | 1kuPDIP (N) | 16 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2954SNACTIVE0 to 702.20 | 1kuSOIC (D) | 16 View 40 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2954SNG4ACTIVE0 to 702.20 | 1kuSOIC (D) | 16 View 40 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ2954SNTRACTIVE0 to 702.00 | 1kuSOIC (D) | 16 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ2954SNTRG4ACTIVE0 to 702.00 | 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 12:14 PM GMT, 20 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksBQ2954PN
AmericasRochester Electronics >1k
WorldwideDigiKey 150
Mouser Electronics 271
TI Lead Time*: 20 WeeksBQ2954PNE4
WorldwideMouser Electronics 235
TI Lead Time*: 20 WeeksBQ2954SN
AmericasArrow 276
Avnet 280
Newark 179
Rochester Electronics >1k
AsiaFarnell Asia 45
WPI 59
EuropeArrow Southern Europe 120
Avnet-SILICA 40
Farnell 32
Spoerle 40
WorldwideMouser Electronics 418
TI Lead Time*: 20 WeeksBQ2954SNG4
AmericasAvnet 320
TI Lead Time*: 20 WeeksBQ2954SNTR
AmericasRochester Electronics >1k
TI Lead Time*: 20 WeeksBQ2954SNTRG4
AmericasAvnet >1k
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
BQ2954PN RoHS Compliant Pb-Free (RoHS) CU NIPDAU N/A for Pkg TypeViewView
BQ2954PNE4 RoHS Compliant Pb-Free (RoHS) CU NIPDAU N/A for Pkg TypeViewView
BQ2954SN RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ2954SNG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ2954SNTR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ2954SNTRG4 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

Most useful technical documents for BQ2954 Help

Datasheet

Application Notes

View Application Notes for Battery Charge Management

User Guides

View User Guides for Battery Charge Management

Tools & Software

NamePart # Company Tool / Software Type
BQ2954 Evaluation Module for Li-Ion, switchmode, high-side current sensingDV2954S1HTexas InstrumentsDevelopment Boards/EVMs
BQ2954 Evaluation Module for Li-Ion, switchmode, low-side current sensingDV2954S1LTexas 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
BQ24702 Multi-Chemistry Battery Charge Controller and System Power Selector BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24703 Multi-Chemistry Battery Charge Controller and System Power Selector BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24100 Standalone Synchronous Switch-mode Li-Ion Charger w/2A FET in QFN-20, 1-Cell 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.
BQ2000 Switch-mode Multi-Chemistry Battery Charger with Peak Voltage Detection Termination BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24721C Smart Battery Charger with SMBus and System Power Selector, Softer Turn-On BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24115 Host-controlled 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.
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.
BQ24103 Standalone Synchronous Switch-mode Li-Ion Charger w/2A FET in QFN-20, 1- or 2-cell BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24740 Multi-Cell Synchronous Switch-mode Battery Charger BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ77PL900 5-10 cell Li-ion Battery protection & AFE BATTERY MANAGEMENT-LITHIUM ION PROTECTION TI customers also evaluated this product.
BQ78PL114 PowerLAN Gateway Battery Management Controller with PowerPump Cell Balancing BATTERY MANAGEMENT-BATTERY FUEL GAUGES TI customers also evaluated this product.
BQ29330 Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE BATTERY MANAGEMENT-LITHIUM ION PROTECTION TI customers also evaluated this product.

Support and Community

Customer Tags Help

No Tags are Available for this Part Number

Other Support



Click Here