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UC3909 Status: ACTIVE

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


      
         
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Datasheet

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 UC2909 UC3909
# 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

  • BQ2031: Switch-mode Lead-Acid Battery Charger with User-Selectable Charge Algorithms
  • UC3906: Linear Lead-Acid Battery Charger
  • BQ24450: Integrated Charge Controller for Lead-Acid Batteries
  • TPS40210: Wide Input Range Current Mode Boost Controller
  • TPS2051B: Single, Current-Limited, Power-Distribution Switch

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 \x963.9mV/°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
UC3909DWACTIVE-20 to 703.40 | 1kuSOIC (DW) | 20 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC3909DWG4ACTIVE-20 to 703.40 | 1kuSOIC (DW) | 20 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC3909DWTRACTIVE-20 to 703.05 | 1kuSOIC (DW) | 20 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC3909DWTRG4ACTIVE-20 to 703.05 | 1kuSOIC (DW) | 20 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC3909NACTIVE-20 to 703.05 | 1kuPDIP (N) | 20 View 20 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC3909NG4ACTIVE-20 to 703.05 | 1kuPDIP (N) | 20 View 20 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC3909QACTIVE-20 to 703.05 | 1kuPLCC (FN) | 28 View 37 | 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 9:52 AM GMT, 20 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksUC3909DW
None Reported
View Distributors
TI Lead Time*: 20 WeeksUC3909DWG4
None Reported
View Distributors
TI Lead Time*: 20 WeeksUC3909DWTR
None Reported
View Distributors
TI Lead Time*: 20 WeeksUC3909DWTRG4
None Reported
View Distributors
TI Lead Time*: 14 WeeksUC3909N
AmericasNewark 69
Rochester Electronics 303
AsiaFarnell Asia 78
WPI 61
EuropeAvnet-SILICA 60
Farnell 78
WorldwideDigiKey 778
Mouser Electronics 58
TI Lead Time*: 14 WeeksUC3909NG4
EuropeEBV Elektronik 5
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUC3909Q
AmericasRochester Electronics >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
UC3909DW RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC3909DWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC3909DWTR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC3909DWTRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC3909N RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg TypeViewView
UC3909NG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg TypeViewView
UC3909Q  TBD CU NIPDAU Level-2-220C-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 UC3909 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
BQ2031 Switch-mode Lead-Acid Battery Charger with User-Selectable Charge Algorithms 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.
BQ24450 Integrated Charge Controller for Lead-Acid Batteries 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.
UC2909 Switch-mode Lead-Acid Battery Charger with Differential Current Sense 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.
TPS40210 Wide Input Range Current Mode Boost Controller NON-ISOLATED SWITCHING DC/DC REGULATORS-DC/DC CONTROLLERS (EXTERNAL SWITCH) TI customers also evaluated this product.
TPS2051B Single, Current-Limited, Power-Distribution Switch PCMCIA AND USB-USB POWER SWITCHES TI customers also evaluated this product.

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