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BQ29419 Status: ACTIVE

Voltage Protection for 2, 3, or 4 Cell Li-Ion Batteries


      
         
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 BQ29410 BQ29411 BQ29412 BQ29413 BQ29414 BQ29415 BQ29419
Cells Protected2, 3, 4  2, 3, 4  2, 3, 4  2, 3, 4  2, 3, 4  2, 3, 4  2, 3, 4  
Overvoltage Threshold(V)4.35  4.40  4.45  4.5  4.55  4.6  4.30  
Protection FETsExternal  External  External  External  External  External  External  
Shutdown Current(uA)2  2  2  2  2  2  2  
Pin/Package8SM8, 8TSSOP  8SM8, 8TSSOP  8SM8, 8TSSOP  8SM8, 8TSSOP  8SM8, 8TSSOP  8SM8, 8TSSOP  8TSSOP  
Approx. Price (US$) 0.45 | 1ku   0.45 | 1ku   0.45 | 1ku   0.45 | 1ku   0.45 | 1ku   0.45 | 1ku   0.45 | 1ku  
 SamplesSamplesSamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • BQ29330: Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE
  • BQ77PL900: 5-10 cell Li-ion Battery protection & AFE
  • BQ29312A: Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE
  • BQ20Z40: SBS Compliant Gas Gauge with Impedance Track Technology for use with BQ29330
  • BQ2954: Switch-mode Li-Ion Charge Controller
  • BQ78PL114: PowerLAN Gateway Battery Management Controller with PowerPump Cell Balancing

More Related Products

Product Information

Features

  • 2-, 3-, or 4-Cell SecondaryProtection
  • Low Power Consumption ICC < 2 µA [VCELL(ALL) < V(PROTECT)]
  • Fixed High Accuracy Overvoltage Protection Threshold
    • bq29410 = 4.35 V
    • bq29411 = 4.40 V
    • bq29412 = 4.45 V
    • bq29413 = 4.50 V
    • bq29414 = 4.55 V
    • bq29415 = 4.60 V
    • bq29419 = 4.30 V
  • Programmable Delay Time of Detection
  • High Power Supply Ripple Rejection
  • Stable During Pulse Charge Operation
  • APPLICATIONS
    • 2nd-Level Overvoltage Protection in Li-Ion Battery Packs in:
      • Notebook Computers
      • Portable Instrumentation
      • Portable Equipment

Description

The bq2941x is a secondary overvoltage protection IC for 2-, 3-, or 4-cell lithium-ion battery packs that incorporates a high-accuracy precision overvoltage detection circuit. It includes a programmable delay circuit for overvoltage detection time.

FUNCTION

Each cell in a multiple-cell pack is compared to an internal reference voltage. If one cell reaches an overvoltage condition, the protection sequence begins. The bq2941x device starts charging an external capacitor through the CD pin. When the CD pin voltage reaches 1.2 V, the OUT pin changes from a low level to a high level.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
BQ29419PWACTIVE-40 to 1100.50 | 1kuTSSOP (PW) | 8 View 150 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ29419PWG4ACTIVE-40 to 1100.50 | 1kuTSSOP (PW) | 8 View 150 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ29419PWRACTIVE-40 to 1100.45 | 1kuTSSOP (PW) | 8 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ29419PWRG4ACTIVE-40 to 1100.45 | 1kuTSSOP (PW) | 8 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this Footprint

* 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 WeeksBQ29419PW
None Reported
View Distributors
TI Lead Time*: 20 WeeksBQ29419PWG4
None Reported
View Distributors
TI Lead Time*: 20 WeeksBQ29419PWR
AmericasRochester Electronics >1k
AsiaWPI >1k
TI Lead Time*: 20 WeeksBQ29419PWRG4
None Reported
View Distributors
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
BQ29419PW RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ29419PWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ29419PWR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ29419PWRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView

* 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 BQ29419 Help

Datasheet

Application Notes

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
BQ29330 Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE BATTERY MANAGEMENT-LITHIUM ION PROTECTION 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.
BQ29312A Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE BATTERY MANAGEMENT-LITHIUM ION PROTECTION TI customers also evaluated this product.
BQ29410 Secondary Over-Voltage Protection for 2-4 cell in series Li-Ion/Poly (4.35V) BATTERY MANAGEMENT-LITHIUM ION PROTECTION TI customers also evaluated this product.
UCC3911-1 2-Cell Lithium-Ion Battery Protection IC W/Internal FET And Vov = 4.20V BATTERY MANAGEMENT-LITHIUM ION PROTECTION TI customers also evaluated this product.
BQ29400 2nd Level Over Voltage Protection for 2, 3, or 4 Cell LiIon & LiPoly Batteries (2nd Lev Protection) BATTERY MANAGEMENT-LITHIUM ION PROTECTION TI customers also evaluated this product.
BQ29311 3-, 4-Cell Lithium-Ion Protection IC for Use With BQ2083/5 BATTERY MANAGEMENT-LITHIUM ION PROTECTION TI customers also evaluated this product.
BQ29412 Secondary Over-Voltage Protection for 2-4 cell in series Li-Ion/Poly (4.45V) BATTERY MANAGEMENT-LITHIUM ION PROTECTION TI customers also evaluated this product.
BQ20Z40 SBS Compliant Gas Gauge with Impedance Track Technology for use with BQ29330 BATTERY MANAGEMENT-BATTERY FUEL GAUGES TI customers also evaluated this product.
BQ2954 Switch-mode Li-Ion Charge Controller BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT 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.
BQ27541 Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration BATTERY MANAGEMENT-BATTERY FUEL GAUGES TI customers also evaluated this product.

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