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BQ29411 Status: ACTIVE

Secondary Over-Voltage Protection for 2-4 cell in series Li-Ion/Poly (4.40V)


      
         
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 BQ29410 BQ29411BQ29412 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

  • BQ29419: Voltage Protection for 2, 3, or 4 Cell Li-Ion Batteries
  • BQ29412: Secondary Over-Voltage Protection for 2-4 cell in series Li-Ion/Poly (4.45V)
  • UCC28061: Natural Interleaving(TM) Transition-Mode PFC Controller with Improved Audible Noise Immunity
  • TPS61165: High Brightness White LED Driver in 2mm x 2mm QFN Package
  • TPS650243: Power Management ICs for Li-Ion Powered Systems

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
BQ29411DCT3RACTIVE-40 to 1100.45 | 1kuSM8 (DCT) | 8  3000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ29411DCT3RE6ACTIVE-40 to 1100.45 | 1kuSM8 (DCT) | 8  3000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ29411DCTRACTIVE-40 to 1100.45 | 1kuSM8 (DCT) | 8  3000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ29411DCTRG4ACTIVE-40 to 1100.45 | 1kuSM8 (DCT) | 8  3000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ29411DCTTACTIVE-40 to 1100.50 | 1kuSM8 (DCT) | 8  250 | SMALL T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ29411DCTTG4ACTIVE-40 to 1100.50 | 1kuSM8 (DCT) | 8  250 | SMALL T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ29411PWACTIVE-40 to 1100.50 | 1kuTSSOP (PW) | 8 View 150 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
BQ29411PWRACTIVE-40 to 1100.45 | 1kuTSSOP (PW) | 8 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ29411PWRG4ACTIVE-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 12:06 PM GMT, 08 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 6 WeeksBQ29411DCT3R
WorldwideDigiKey  Available
TI Lead Time*: 6 WeeksBQ29411DCT3RE6
WorldwideDigiKey  Available
TI Lead Time*: 4 WeeksBQ29411DCTR
WorldwideDigiKey >1k
TI Lead Time*: 4 WeeksBQ29411DCTRG4
WorldwideDigiKey  Available
Mouser Electronics >1k
TI Lead Time*: 4 WeeksBQ29411DCTT
WorldwideDigiKey  Available
TI Lead Time*: 4 WeeksBQ29411DCTTG4
WorldwideDigiKey  Available
TI Lead Time*: 4 WeeksBQ29411PW
AmericasRochester Electronics 900
WorldwideDigiKey 560
TI Lead Time*: 4 WeeksBQ29411PWR
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksBQ29411PWRG4
WorldwideDigiKey 289
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
BQ29411DCT3R RoHS Compliant Pb-Free (RoHS) CU SNBI Level-1-260C-UNLIMViewView
BQ29411DCT3RE6 RoHS Compliant Pb-Free (RoHS) CU SNBI Level-1-260C-UNLIMViewView
BQ29411DCTR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ29411DCTRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ29411DCTT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ29411DCTTG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
BQ29411PW  TBD CU NIPDAU Level-1-220C-UNLIMViewView
BQ29411PWR  TBD CU NIPDAU Level-1-220C-UNLIMViewView
BQ29411PWRG4 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 BQ29411 Help

Datasheet

Application Notes

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
BQ29419 Voltage Protection for 2, 3, or 4 Cell Li-Ion Batteries 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.
UCC28061 Natural Interleaving(TM) Transition-Mode PFC Controller with Improved Audible Noise Immunity AC/DC AND DC/DC POWER SUPPLIES-POWER FACTOR CORRECTION ICS TI customers also evaluated this product.
TPS61165 High Brightness White LED Driver in 2mm x 2mm QFN Package LIGHTING AND DISPLAY SOLUTIONS-WHITE LED DRIVERS TI customers also evaluated this product.
TPS650243 Power Management ICs for Li-Ion Powered Systems POWER MANAGEMENT MULTI-CHANNEL IC (PMIC) SOLUTIONS-PMIC SOLUTIONS WITH AND WITHOUT BATTERY CHARGER TI customers also evaluated this product.
TPS2012A 2.0A, 2.7 to 5.5V Single High-Side MOSFET Switch IC, No Fault Reporting, Active-Low Enable POWER MUXES AND CURRENT LIMITED SWITCHES-CURRENT LIMITED SWITCHES TI customers also evaluated this product.
TPS79901 Single Output LDO, 200mA, Adj.(1.193 to 6.5V), Low Quiescent Current, Low Noise, High PSRR LINEAR REGULATORS-SINGLE CHANNEL LDO TI customers also evaluated this product.
TPS61160 White LED Driver with Digital and PWM Brightness Control in 2mm x 2mm Package LIGHTING AND DISPLAY SOLUTIONS-WHITE LED DRIVERS TI customers also evaluated this product.
BQ20Z95 SBS 1.1-Compliant Gas Gauge Enabled w/Impedance Track BATTERY MANAGEMENT-BATTERY FUEL GAUGES TI customers also evaluated this product.
TPS78233 Single Fixed Output LDO, 150mA, 1uA Quiescent Current LINEAR REGULATORS-SINGLE CHANNEL LDO TI customers also evaluated this product.
TPS62040 Adjustable, 1.2-A, 95% Efficient Step-Down Converter, 18uA, MSOP-10 DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.
TPS73150 Single Output LDO, 150mA, Fixed(5.0V), Cap free, Low Noise, Fast Transient Response LINEAR REGULATORS-SINGLE CHANNEL LDO TI customers also evaluated this product.

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