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UC2909 Status: ACTIVE

Switch-mode Lead-Acid Battery Charger with Differential Current Sense


      
         
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Datasheet

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 UC2909UC3909 
# Series Cells Multiple  
Charge Current(Max)(A) >2  
Charge Status Outputs2  2  
Control TopologySwitchmode  Switchmode  
Switching Frequency(kHz) 242  
Primary Charge Termination MethodMaximum Voltage, Minimum Current  Maximum Voltage, Minimum Current  
Pin/Package20PDIP, 20SOIC  20PDIP, 20SOIC, 28PLCC  
Vin(Max)(V)40  40  
 SamplesSamples
 InventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • UC3909: Switch-mode Lead-Acid Battery Charger with Differential Current Sense
  • BQ2031: Switch-mode Lead-Acid Battery Charger with User-Selectable Charge Algorithms
  • BQ24450: Integrated Charge Controller for Lead-Acid Batteries

More Related Products

Product Information

Features

  • Accurate and Efficient Control of Battery Charging
  • Average Current Mode Control from Trickle to Overcharge
  • Resistor Programmable Charge Currents
  • Thermistor Interface Tracks Battery Requirements Over Temperature
  • Output Status Bits Report on Four Internal Charge States
  • Undervoltage Lockout Monitors VCC and VREF

Description

The UC3909 family of Switchmode Lead-Acid Battery Chargers accurately controls lead acid battery charging with a highly efficient average current mode control loop. This chip combines charge state logic with average current PWM control circuitry. Charge state logic commands current or voltage control depending on the charge state. The chip includes undervoltage lockout circuitry to insure sufficient supply voltage is present before output switching starts. Additional circuit blocks include a differential current sense amplifier, a 1.5% voltage reference, a �3.9mV/°C thermistor linearization circuit, voltage and current error amplifiers, a PWM oscillator, a PWM comparator, a PWM latch, charge state decode bits, and a 100mA open collector output driver.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
UC2909DWACTIVE-40 to 853.40 | 1kuSOIC (DW) | 20 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC2909DWG4ACTIVE-40 to 853.40 | 1kuSOIC (DW) | 20 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC2909DWTRACTIVE-40 to 853.05 | 1kuSOIC (DW) | 20 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC2909DWTRG4ACTIVE-40 to 853.05 | 1kuSOIC (DW) | 20 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC2909NACTIVE-40 to 853.05 | 1kuPDIP (N) | 20 View 20 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC2909NG4ACTIVE-40 to 853.05 | 1kuPDIP (N) | 20 View 20 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples

* 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 9:49 AM GMT, 08 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksUC2909DW
AmericasAvnet 17
Rochester Electronics 10
EuropeAvnet-SILICA 110
Compel 66
TI Lead Time*: 20 WeeksUC2909DWG4
None Reported
View Distributors
TI Lead Time*: 20 WeeksUC2909DWTR
AmericasRochester Electronics >1k
TI Lead Time*: 20 WeeksUC2909DWTRG4
None Reported
View Distributors
TI Lead Time*: 4 WeeksUC2909N
AmericasArrow 618
Rochester Electronics 173
WorldwideDigiKey 74
TI Lead Time*: 4 WeeksUC2909NG4
EuropeEBV Elektronik 10
WorldwideDigiKey  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
UC2909DW RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC2909DWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC2909DWTR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC2909DWTRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC2909N RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg TypeViewView
UC2909NG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg TypeViewView

* 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 UC2909 Help

Datasheet

Application Notes

View Application Notes for Battery Charge Management

Tools & Software

NamePart # Company Tool / Software Type
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
UC3909 Switch-mode Lead-Acid Battery Charger with Differential Current Sense BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ2031 Switch-mode Lead-Acid Battery Charger with User-Selectable Charge Algorithms BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24450 Integrated Charge Controller for Lead-Acid Batteries BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
UC3906 Linear Lead-Acid Battery Charger BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
UCC3956 Switch-mode Lead-Acid Battery Charger with Differential Current Sense BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24105 Standalone Synchronous Switch-Mode Li-Ion Charger w/2A FET in QFN-20, 1 to 3 Cells BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
UC2906 Linear Lead-Acid Battery Charger BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24702 Multi-Chemistry Battery Charge Controller and System Power Selector BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.
BQ24703 Multi-Chemistry Battery Charge Controller and System Power Selector BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT TI customers also evaluated this product.

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