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BQ29405 Status: NRND

Voltage Protection for 2, 3, or 4 Cell LiIon Batteries (2nd Lev Protection)


      
         
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Alert Icon   NRND: This product is not recommended for new designs. However, the device, tool, or software continues to be in production to support existing customers. TI does not recommend using this part in a new design. TI encourages designers to consider alternative products for new designs.

Replaced By:

  • BQ29415 The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 
 BQ29400 BQ29401 BQ29405
Cells Protected2, 3, 4  2, 3, 4  2, 3, 4  
Overvoltage Threshold(V)4.35  4.45  4.65  
Protection FETsExternal  External  External  
Shutdown Current(uA)2  2  2  
Pin/Package8SM8, 8TSSOP  8SM8, 8TSSOP  8SM8  
Approx. Price (US$) 0.42 | 1ku   0.40 | 1ku   0.55 | 1ku  
 SamplesSamplesSamples
 InventoryInventoryInventory

Product Information

Features

  • 2-, 3-, or 4-Cell Secondary Protection
  • Low Power Consumption ICC < 2 µA [VCELL(ALL) <V(PROTECT)]
  • High Accuracy Over Sense Voltage:
    • bq29400: 4.35 V ±25 mV
    • bq29400A: 4.40 V ±25 mV
    • bq29401: 4.45 V ±25 mV
    • bq29405: 4.65 V ±25 mV
  • Prefixed Protection Threshold Voltage
  • Programmable Delay Time
  • High Power Supply Ripple Rejection
  • Stable During Pulse Charge Operation
  • APPLICATIONS
    • 2nd Level Protection in Lion Battery Packs in
      • Notebook PCs
      • Portable Instrumentation
      • Medical and Test Equipment

Description

The bq29400, bq29400A, bq29401, and bq29405 are BiCMOS secondary protection ICs for 2-, 3-, or 4-cell Lithium-Ion battery packs that incorporate a high-accuracy precision over voltage detection circuit. They include a programmable delay circuit for over voltage detection time.

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 bq2940x 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 | PinsPackage QTY | Package CarrierSymbolsFootprintsSamples
BQ29405DCT3ACTIVE-25 to 850.55 | 1kuSM8 (DCT) | 8 3000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ29405DCT3E6ACTIVE-25 to 850.55 | 1kuSM8 (DCT) | 8 3000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
BQ29405DCT3RNRND-25 to 85 SM8 (DCT) | 8    Not Available

* 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 12:12 PM GMT, 22 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksBQ29405DCT3
AsiaFarnell Asia >1k
EuropeFarnell >1k
TI Lead Time*: 20 WeeksBQ29405DCT3E6
None Reported
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** 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
BQ29405DCT3 RoHS Compliant Pb-Free (RoHS) CU SNBI Level-1-260C-UNLIMViewView
BQ29405DCT3E6 RoHS Compliant Pb-Free (RoHS) CU SNBI 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.

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