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BQ24901 Status: ACTIVE

1-cell Li-Ion Charger for Offline Applications (Primary-side Control) in TSSOP-14


      
         
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 BQ24901
# Series Cells1  
Charge Current(Max)(A)>2  
Charge Status Outputs2  
Control TopologySwitchmode  
Primary Charge Termination MethodMinimum Current  
Pin/Package14TSSOP  
Vin(Max)(V)11.5  
Battery Charge Voltage(V)4.2  
 Samples
 Inventory

Customers Who Evaluated This Product Also Evaluated

  • BQ24100: Standalone Synchronous Switch-mode Li-Ion Charger w/2A FET in QFN-20, 1-Cell
  • BQ24401: Switch-mode NiCd/NiMH Battery Charger with dT/dt Termination
  • BQ24001: Linear 1-cell Li-Ion Battery Charger w/Integrated FET, One LED
  • BQ29330: Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE

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Product Information

Features

  • Designed for Off-Line Charger Design for Single-Cell Li-Ion Packs
  • Provides Control Feedback to a Primary-Side Controller
  • Robust Battery Insertion and Removal Detection
  • Charge Current and Voltage Regulation Feedback to Primary-Side for High-Accuracy Charging
  • Charge Termination by Minimum Current and Time
  • Pre-Charge Conditioning Regulator with Safety Timer
  • Charge Status Outputs for LED or Host Processor Interface Indicates Charge-in-Progress, Charge Completion, and Fault Conditions
  • Temperature Monitoring Before and During Charge
  • Short-Circuit Protection
  • Small, 14-Pin TSSOP Package
  • APPLICATIONS
    • Cradle Chargers for Digital Cameras
    • Desktop Chargers
    • Handheld Devices

Description

The bq24901 Li-Ion charge management devices are designed specifically for off-line charger applications. The bq24901 resides on the secondary-side of the transformer and provides the control feedback to a variety of primary side controllers. The bq24901 offers current or voltage regulation feedback, temperature monitoring, charge status, and adjustable charge termination, in a single monolithic device. During battery-absent or charge-complete conditions, the bq24901 continuously regulates the secondary-side voltage, used as VCC supply to the device.

The bq24901 features a time-limited preconditioning phase to condition deeply discharged cells. The pre-conditioning phase is achieved by linear regulation in the secondary side.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
BQ24901PWACTIVE-20 to 852.90 | 1kuTSSOP (PW) | 14 View 90 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ24901PWG4ACTIVE-20 to 852.90 | 1kuTSSOP (PW) | 14 View 90 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ24901PWRACTIVE-20 to 852.65 | 1kuTSSOP (PW) | 14 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ24901PWRG4ACTIVE-20 to 852.65 | 1kuTSSOP (PW) | 14 View 2000 | 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 12:15 PM GMT, 25 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksBQ24901PW
AmericasRochester Electronics >1k
AsiaFarnell Asia 178
EuropeFarnell 178
WorldwideDigiKey 174
TI Lead Time*: 20 WeeksBQ24901PWG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksBQ24901PWR
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksBQ24901PWRG4
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
BQ24901PW RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ24901PWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ24901PWR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ24901PWRG4 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 BQ24901 Help

Datasheet

Tools & Software

NamePart # Company Tool / Software Type
Temp Sense Designer SoftwareTEMPSENSE-SWTexas InstrumentsAnalysis Software
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
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.
BQ24401 Switch-mode NiCd/NiMH Battery Charger with dT/dt Termination BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24001 Linear 1-cell Li-Ion Battery Charger w/Integrated FET, One LED BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24705 Host-Controlled Multi-Chemistry Battery Charger With Low Input Power Detect BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24200 500-mA, 4.2-V Li-Ion Charger for Current-Limited App. w/Temp Sense in MSOP-8 BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24704 Low Cost, Host-Controlled Li-Ion and Li-Polymer Battery Charger With Low Iq BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ2954 Switch-mode Li-Ion Charge Controller BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24702 Multi-Chemistry Battery Charge Controller and System Power Selector BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24072 USB-Friendly Li-Ion Battery Charger and Power-Path Management IC, Vout 200mV above Vbat BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24070 Li-Ion Charger with Dynamic Power-Path Management, Output regulated to 4.4V BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT 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.

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