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BQ24020 Status: ACTIVE

bqTINY-II Dual Input USB/AC Adpater 1-Cell Li-Ion Charger w/Charge Enable & Temp Sense in QFN-10

      
         
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 BQ24020BQ24022 BQ24023 BQ24024 BQ24025 BQ24026 BQ24027 
# Series Cells1  1  1  1  1  1  1  
Charge Current(Max)(A)1  1  1  1  1  1  1  
Charge Status Outputs2  2  2  2  2  2  2  
Control TopologyLinear  Linear  Linear  Linear  Linear  Linear  Linear  
Primary Charge Termination MethodMinimum Current  Minimum Current  Minimum Current  Minimum Current  Minimum Current  Minimum Current  Minimum Current  
Pin/Package10SON  10SON  10SON  10SON  10SON  10SON  10SON  
Vin(Max)(V)7  7  7  7  7  7   
Battery Charge Voltage(V)4.2  4.2  4.2  4.2  4.2  4.2   
Optional FunctionsCE and TS  PG and CE  CE and TTE  TTE and TS  CE and TS  TE and TS   
 SamplesSamplesSamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • BQ24070: Li-Ion Charger with Dynamic Power-Path Management, Output regulated to 4.4V
  • BQ24072: USB-Friendly Li-Ion Battery Charger and Power-Path Management IC, Vout 200mV above Vbat
  • BQ2000: Switch-mode Multi-Chemistry Battery Charger with Peak Voltage Detection Termination
  • TPS5430: 5.5V to 36V, 3A, 500kHz Step Down SWIFT™ Converter
  • TPS60400: 60mA Charge Pump Voltage Inverter with Variable Switching Frequency
  • TPS61165: High Brightness White LED Driver in 2mm x 2mm QFN Package

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Product Information

Features

  • Small 3 mm × 3 mm MLP Package
  • Charges and powers Systems from Either AC Adapter or USB With Autonomous power-Source Selection
  • Integrated USB Control With Selectable 100 mA and 500 mA Charge Rates
  • Ideal for Low-Dropout Charger Designs for Single-Cell Li-Ion or Li-pol Packs in Space Limited portable applications
  • Integrated power FET and Current Sensor for Up to 1-A Charge applications From AC Adapter
  • Precharge Conditioning With Safety Timer
  • power Good (AC Adapter Present) Status Output
  • Optional Battery Temperature Monitoring Before and During Charge
  • Automatic Sleep Mode for Low-power Consumption
  • APPLICATIONS
    • PDAs, MP3 Players
    • Digital Cameras
    • Internet appliances
    • Smartphones

bqTINY is a trademark of Texas Instruments.

Description

The bqTINY-II series are highly-integrated, flexible Li-Ion linear charge and system power management devices for space-limited charger applications. In a single monolithic device, the bqTINY-II offers integrated USB-port and ac-adapter supply management with autonomous power-source selection, power-FET and current-sensor interfaces, high-accuracy current and voltage regulation, charge status, and charge termination.

The bqTINY-II automatically selects the USB-port or the ac-adapter as the power source for the system. In the USB configuration, the host can select from two preset charge rates of 100 mA or 500 mA. In the ac-adapter configuration, an external resistor sets the system or charge current.

The bqTINY-II charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on minimum current. An internal charge timer provides a backup safety for charge termination. The bqTINY-II automatically restarts the charge if the battery voltage falls below an internal threshold. The bqTINY-II automatically enters sleep mode when both supplies are removed.

Different versions of the bqTINY-II offer many additional features. These include a temperature-sensor input for detecting hot or cold battery packs, a power-good output (PG) indicating the presence of input power, a TTL-level charge-enable input (CE) used to disable or enable the charge process, and a TTL-level timer and taper-detect enable input (TTE) used to disable or enable the fast-charge timer and charge termination.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsSamples
BQ24020DRCRACTIVE-40 to 1250.99 | 1kuSON (DRC) | 10 View 3000 | LARGE T&R Download CAD Format for this Symbol
BQ24020DRCRG4ACTIVE-40 to 1250.99 | 1kuSON (DRC) | 10 View 3000 | LARGE T&R Download CAD Format for this Symbol

* 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
BQ24020DRCRAs of 12:04 PM GMT, 03 Jul 2009As of 12:04 PM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 16 Weeks AmericasDigiKey >1k
 Rochester Electronics >1k
 AsiaWPI >1k
BQ24020DRCRG4As of 12:04 PM GMT, 03 Jul 2009As of 12:04 PM GMT, 03 Jul 2009
 Lead TimeRegionCompanyIn StockPurchase
 16 Weeks AmericasDigiKey  Available
 Rochester Electronics >1k
 AsiaWPI >1k
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
BQ24020DRCR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ24020DRCRG4 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 BQ24020 Help

Datasheet

Application Notes

View Application Notes for Battery Charge Management

User Guides

View User Guides for Battery Charge Management

Tools & Software

NamePart # Company Tool / Software Type
Temp Sense Designer SoftwareTEMPSENSE-SWTexas InstrumentsAnalysis Software
bq24020 bqTINY-II Evaluation ModuleBQ24020EVMTexas InstrumentsDevelopment Boards/EVMs
Quick Search Selection Tool for Battery ChargersBATTERY_CHARGERS_SELECTION_TOOLTexas InstrumentsFree Evaluation Tools

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
BQ24070 Li-Ion Charger with Dynamic Power-Path Management, Output regulated to 4.4V   TI customers also evaluated this product.
BQ24072 USB-Friendly Li-Ion Battery Charger and Power-Path Management IC, Vout 200mV above Vbat   TI customers also evaluated this product.
BQ2000 Switch-mode Multi-Chemistry Battery Charger with Peak Voltage Detection Termination   TI customers also evaluated this product.
BQ24103A Standalone Synchronous Switch-mode Li-Ion Charger with 2A FET   TI customers also evaluated this product.
BQ24030 Dual Input Li-Ion Charger with Dynamic Power-Path Management, Output regulated to 6V, Vbat 4.2V   TI customers also evaluated this product.
BQ24085 750mA SINGLE-CHIP Li-Ion/Li-Pol CHARGE MANAGEMENT IC with Thermal Regulation   TI customers also evaluated this product.
BQ24022 bqTINY-II Dual Input USB/AC Adpater 1-Cell Li-Ion Charger w/Charge Enable & Power Good in QFN-10   TI customers also evaluated this product.
BQ24032A Dual Input Li-Ion Charger with Dynamic Power Path, Output regulated to 4.4V, Vbat 4.2V   TI customers also evaluated this product.
BQ2057C Low Dropout Linear 1-cell Li-Ion Charge Controller with AutoCompTM, 4.2V   TI customers also evaluated this product.
BQ24080 1-cell Li-Ion Charger w/ 1-A FET, AC Present and Charge Enable   TI customers also evaluated this product.
TPS5430 5.5V to 36V, 3A, 500kHz Step Down SWIFT™ Converter DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.
TPS60400 60mA Charge Pump Voltage Inverter with Variable Switching Frequency INDUCTORLESS DC/DC REGULATORS (CHARGE PUMPS)-INVERTING CHARGE PUMP REGULATORS TI customers also evaluated this product.
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