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BQ24305 Status: ACTIVE

Overvoltage and Overcurrent Protection IC and Li+ Charger Front End Protection IC

      
         
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Datasheet

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Functional Block Diagram


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 BQ24300 BQ24304 BQ24305
Input Voltage(Max)(V)30  30  30  
Input Over-Voltage Protection(V)10.5  10.5  10.5  
Input Over-Current Protection(A)0.3  0.3  0.3  
Battery Over-Voltage Protection(Max)(V)4.4  4.4  4.4  
Battery Over-Voltage Protection(Typ)(V)4.35  4.35  4.35  
Optional FunctionsReverse polarity protection  Reverse polarity protection  Reverse polarity protection  
 SamplesSamplesSamples
 InventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • BQ24304: Charger front end protection IC with 30V max Vin and 4.5V LDO output
  • SN74LVC1G126: Single Bus Buffer Gate With 3-State Outputs
  • TPS2051B: Single, Current-Limited, Power-Distribution Switch
  • TPS63010: High Efficient Single Inductor Buck-Boost Converter with 2-A Switches

Product Information

Features

  • Provides Protection for Three Variables:
    • Input Overvoltage
    • Input Overcurrent with Current Limiting
    • Battery Overvoltage
  • 30V Maximum Input Voltage
  • Optional Input Reverse Polarity Protection
  • High Immunity Against False Triggering Due to Voltage Spikes
  • Robust Against False Triggering Due to Current Transients
  • Thermal Shutdown
  • Enable Function
  • Small 2 mm × 2 mm 8-Pin SON Package
  • LDO Mode Voltage Regulation Options:
    • 5.5V on bq24300
    • 4.5V on bq24304
    • 5.0V on bq24305
  • APPLICATIONS
    • Bluetooth Headsets
    • Low-Power Handheld Devices

PowerPAD Is a trademark of Texas Instruments

Description

The bq24300 and bq24304 are highly integrated circuits designed to provide protection to Li-ion batteries from failures of the charging circuit. The IC continuously monitors the input voltage, the input current, and the battery voltage. The device operates like a linear regulator: for voltages up to the Input Overvoltage threshold, the output is held at 5.5V (bq24300), 5.0V (bq24305) or 4.5V (bq24304). In case of an input overvoltage condition, if the overvoltage condition persists for more than a few microseconds, the IC removes power from the charging circuit by turning off an internal switch. In the case of an overcurrent condition, it limits the current to a safe value for a blanking duration before turning the switch off. Additionally, the IC also monitors its own die temperature and switches off if it becomes too hot.

The IC also offers optional protection against reverse voltage at the input with an external P-channel MOSFET.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsPackage QTY | Package CarrierSamples
BQ24305DSGRACTIVE0 to 1250.55 | 1kuSON (DSG) | 8 3000 | LARGE T&RPurchase Samples
BQ24305DSGRG4ACTIVE0 to 1250.55 | 1kuSON (DSG) | 8 3000 | LARGE T&RPurchase Samples
BQ24305DSGTACTIVE0 to 1250.65 | 1kuSON (DSG) | 8 250 | SMALL T&R
BQ24305DSGTG4ACTIVE0 to 1250.65 | 1kuSON (DSG) | 8 250 | SMALL T&R

* 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
BQ24305DSGRAs of 12:02 PM GMT, 03 Jul 2009As of 12:02 PM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 4 Weeks AmericasDigiKey  Available
BQ24305DSGRG4As of 12:02 PM GMT, 03 Jul 2009As of 12:02 PM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 4 Weeks AmericasDigiKey  Available
BQ24305DSGTAs of 12:02 PM GMT, 03 Jul 2009As of 12:02 PM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 12 Weeks AmericasDigiKey 243
BQ24305DSGTG4As of 12:02 PM GMT, 03 Jul 2009As of 12:02 PM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 12 Weeks AmericasDigiKey  Available
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
BQ24305DSGR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ24305DSGRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ24305DSGT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ24305DSGTG4 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 BQ24305 Help

Datasheet

User Guides

Tools & Software

NamePart # Company Tool / Software Type
BQ24305EVM for Li+ Charger Front-End Protection ICBQ24305EVMTexas InstrumentsDevelopment Boards/EVMs

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