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BQ29419 Status: ACTIVE

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

      
         
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Datasheet

Download - PDF Icon
  • Voltage Protection for 2-, 3-, or 4-Cell Li-Ion Batteries (2nd Level Protection) (Rev. G) (bq29419.pdf, 358 KB)
    18 Aug 2008 Download

 BQ29410 BQ29411 BQ29412 BQ29413 BQ29414 BQ29415 BQ29419
Cells Protected(Max)4  4  4  4  4  4  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  
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
  • BQ29400: 2nd Level Over Voltage Protection for 2, 3, or 4 Cell LiIon & LiPoly Batteries (2nd Lev Protection)
  • UCC3911-1: 2-Cell Lithium-Ion Battery Protection IC W/Internal FET And Vov = 4.20V

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 1100.45 | 1kuTSSOP (PW) | 8 View 150 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ29419PWG4ACTIVE0 to 700.45 | 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
BQ29419PWRG4ACTIVE0 to 700.45 | 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

  TI Inventory Status Reported Distributor Inventory
BQ29419PWAs of 10:11 AM GMT, 04 Dec 2008As of 10:11 AM GMT, 04 Dec 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 14 Jan 6 Weeks None Reported
View Distributors		   
BQ29419PWG4As of 10:11 AM GMT, 04 Dec 2008As of 10:11 AM GMT, 04 Dec 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 14 Jan 6 Weeks None Reported
View Distributors		   
BQ29419PWRAs of 10:11 AM GMT, 04 Dec 2008As of 10:11 AM GMT, 04 Dec 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 11 Dec 4 Weeks AmericasDigiKey 419
  AsiaWPI >1k
BQ29419PWRG4As of 10:11 AM GMT, 04 Dec 2008As of 10:11 AM GMT, 04 Dec 2008
 In StockIn Progress QTY | DateLead TimeRegionCompanyIn StockPurchase
 0* >10k | 11 Dec 4 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
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

Datasheets

  • Voltage Protection for 2-, 3-, or 4-Cell Li-Ion Batteries (2nd Level Protection) (Rev. G) (bq29419.pdf, 358 KB)
    18 Aug 2008 Download

Application Notes

  • Five to Eight-Series-Cell bq20z80 Fuel Gauge (slua435.htm, 8 KB)
    10 Sep 2007 Abstract
  • Stacking Multiple bqq2941x Li-Ion Secondary Voltage Protectors (slua434.htm, 8 KB)
    27 Aug 2007 Abstract
 Alternative Products - Are similar to BQ29419
Customers Who Evaluated This Product Also Evaluated...
Part #Name Comments
BQ29330Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFETI customers also evaluated this product.
BQ294002nd Level Over Voltage Protection for 2, 3, or 4 Cell LiIon & LiPoly Batteries (2nd Lev Protection)TI customers also evaluated this product.
UCC3911-12-Cell Lithium-Ion Battery Protection IC W/Internal FET And Vov = 4.20VTI customers also evaluated this product.

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