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BQ29412 Status: ACTIVE

Secondary Over-Voltage Protection for 2-4 cell in series Li-Ion/Poly (4.45V)


      
         
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 BQ29410 BQ29411 BQ29412BQ29413 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

  • BQ77PL900: 5-10 cell Li-ion Battery protection & AFE
  • BQ29330: Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE
  • BQ29419: Voltage Protection for 2, 3, or 4 Cell Li-Ion Batteries
  • BQ76PL102: PowerLAN Dual-Cell Li-Ion Battery Monitor with PowerPump Cell Balancing
  • TPS2065: Single 1A Current-Limited, Power-Distribution Switches for USB Applications
  • TPS5430: 5.5V to 36V, 3A, 500kHz Step Down SWIFT™ Converter

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
BQ29412DCT3RACTIVE-40 to 1100.45 | 1kuSM8 (DCT) | 8  3000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ29412DCT3RE6ACTIVE-40 to 1100.45 | 1kuSM8 (DCT) | 8  3000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ29412DCT3TPREVIEW-40 to 110 8     Not Available
BQ29412DCTRACTIVE-40 to 1100.45 | 1kuSM8 (DCT) | 8  3000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ29412DCTRG4ACTIVE-40 to 1100.45 | 1kuSM8 (DCT) | 8  3000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ29412DCTTACTIVE-40 to 1100.50 | 1kuSM8 (DCT) | 8  250 | SMALL T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ29412DCTTG4ACTIVE-40 to 1100.50 | 1kuSM8 (DCT) | 8  250 | SMALL T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ29412PWACTIVE-40 to 1100.50 | 1kuTSSOP (PW) | 8 View 150 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ29412PWG4ACTIVE-40 to 1100.50 | 1kuTSSOP (PW) | 8 View 150 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ29412PWRACTIVE 0.45 | 1kuTSSOP (PW) | 8 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ29412PWRG4ACTIVE 0.45 | 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 WeeksBQ29412DCT3R
WorldwideDigiKey >1k
Mouser Electronics >1k
TI Lead Time*: 20 WeeksBQ29412DCT3RE6
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksBQ29412DCTR
WorldwideDigiKey >1k
TI Lead Time*: 20 WeeksBQ29412DCTRG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksBQ29412DCTT
AmericasArrow 500
AsiaWPI 55
WorldwideDigiKey  Available
Mouser Electronics >1k
TI Lead Time*: 20 WeeksBQ29412DCTTG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksBQ29412PW
AmericasNewark 586
Rochester Electronics >1k
AsiaFarnell Asia 586
EuropeAvnet-SILICA 300
WorldwideDigiKey 28
Mouser Electronics 600
TI Lead Time*: 20 WeeksBQ29412PWG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksBQ29412PWR
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksBQ29412PWRG4
WorldwideDigiKey 236
Mouser Electronics 590
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
BQ29412DCT3R RoHS Compliant Pb-Free (RoHS) CU SNBI Level-1-260C-UNLIMViewView
BQ29412DCT3RE6 RoHS Compliant Pb-Free (RoHS) CU SNBI Level-1-260C-UNLIMViewView
BQ29412DCTR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ29412DCTRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ29412DCTT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ29412DCTTG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ29412PW  TBD CU NIPDAU Level-1-220C-UNLIMViewView
BQ29412PWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ29412PWR  TBD CU NIPDAU Level-1-220C-UNLIMViewView
BQ29412PWRG4 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 BQ29412 Help

Datasheet

Application Notes

User Guides

Tools & Software

NamePart # Company Tool / Software Type
BQ20Z40EVM-001 SBS 1.1 Impedance Track™ Tech Enabled Battery Mgmt Solution KitBQ20Z40EVM-001Texas InstrumentsDevelopment Boards/EVMs

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BQ29330 Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE BATTERY MANAGEMENT-LITHIUM ION PROTECTION TI customers also evaluated this product.
BQ29419 Voltage Protection for 2, 3, or 4 Cell Li-Ion Batteries 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.
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