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UCC2809-2 Status: ACTIVE

Economy Primary Side Controller


      
         
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Special Note

You can program this part for 90% Maximum Duty Cycle for frequencies of 250kHz or less with added components, per SLUA251


Datasheet

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 UCC2809-1 UCC2809-2UCC3809-1 UCC3809-2 
TopologyBoost, Flyback, Forward  Boost, Flyback, Forward  Boost, Buck, Flyback, Forward  Boost, Buck, Flyback, Forward  
Control MethodCurrent Mode  Current Mode  Current Mode  Current Mode  
Duty Cycle(Max)(%)70  70  70  70  
PWM Outputs(#)1  1  1  1  
Frequency(Max)(kHz)1000  1000  1000  1000  
UVLO Thresholds On/Off(V)10/8  15/8  10/8  15/8  
Pin/Package8MSOP, 8SOIC, 8TSSOP  8MSOP, 8SOIC, 8TSSOP  8MSOP, 8PDIP, 8SOIC, 8TSSOP  8MSOP, 8PDIP, 8SOIC, 8TSSOP  
Regulated Outputs(#)1  1  1  1  
Thermal ShutdownNo  No  No  No  
 SamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • UCC3809-2: Economy Primary Side Controller
  • TPS54331: 3A, 28V Input, 570 kHz Step Down SWIFT™ DC/DC Converter with Eco-mode ™
  • TPS54550: 4.5V to 20V, 6A Synchronous Step Down SWIFT™ Converter

Product Information

Features

  • User Programmable Soft Start With Active Low Shutdown
  • User Programmable Maximum Duty Cycle
  • Accessible 5V Reference
  • Undervoltage Lockout
  • Operation to 1MHz
  • 0.4A Source/0.8A Sink FET Driver
  • Low 100µA Startup Current

Description

The UCC3809 family of BCDMOS economy low power integrated circuits contains all the control and drive circuitry required for off-line and isolated DC-to-DC fixed frequency current mode switching power supplies with minimal external parts count. Internally implemented circuits include undervoltage lockout featuring startup current less than 100µA, a user accessible voltage reference, logic to ensure latched operation, a PWM comparator, and a totem pole output stage to sink or source peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off state.

Oscillator frequency and maximum duty cycle are programmed with two resistors and a capacitor. The UCC3809 family also features full cycle soft start.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
UCC2809D-2ACTIVE-40 to 851.10 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC2809D-2G4ACTIVE-40 to 851.10 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC2809DTR-2ACTIVE-40 to 851.00 | 1kuSOIC (D) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC2809DTR-2G4ACTIVE-40 to 851.00 | 1kuSOIC (D) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC2809P-2ACTIVE-40 to 851.25 | 1kuMSOP (DGK) | 8 View 80 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC2809P-2G4ACTIVE-40 to 851.25 | 1kuMSOP (DGK) | 8 View 80 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC2809PTR-2ACTIVE-40 to 851.00 | 1kuMSOP (DGK) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC2809PTR-2G4ACTIVE-40 to 851.00 | 1kuMSOP (DGK) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC2809PW-2ACTIVE-40 to 851.25 | 1kuTSSOP (PW) | 8 View 150 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC2809PW-2G4ACTIVE-40 to 851.25 | 1kuTSSOP (PW) | 8 View 150 | 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 9:51 AM GMT, 20 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksUCC2809D-2
AmericasRochester Electronics 555
EuropeAbacus Polar 750
Avnet-SILICA 488
WorldwideDigiKey 100
TI Lead Time*: 20 WeeksUCC2809D-2G4
AsiaFarnell Asia 15
EuropeFarnell 15
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC2809DTR-2
AmericasRochester Electronics >1k
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC2809DTR-2G4
WorldwideDigiKey  Available
TI Lead Time*: 14 WeeksUCC2809P-2
AmericasAvnet 160
Rochester Electronics 304
EuropeEBV Elektronik 80
WorldwideDigiKey 60
TI Lead Time*: 14 WeeksUCC2809P-2G4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC2809PTR-2
AmericasRochester Electronics >1k
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC2809PTR-2G4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC2809PW-2
AmericasAvnet 288
Rochester Electronics >1k
EuropeAvnet-SILICA 150
TI Lead Time*: 20 WeeksUCC2809PW-2G4
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
UCC2809D-2 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC2809D-2G4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC2809DTR-2 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC2809DTR-2G4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC2809P-2 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC2809P-2G4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC2809PTR-2 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC2809PTR-2G4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC2809PW-2 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC2809PW-2G4 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 UCC2809-2 Help

Datasheet

Application Notes

View Application Notes for PWM Power Supply Controllers

User Guides

View User Guides for PWM Power Supply Controllers

Reference Designs

Description Part # Company
Flyback with Vin 36-72 V and Vout +/- 135 V PMP069 Texas Instruments
Single Transistor Forward Reference Design PMP180 Texas Instruments
Sync. Buck with Integrated FET, Forward, Dual Sync. Buck Reference Design PMP041 Texas Instruments

Tools & Software

NamePart # Company Tool / Software Type
UCC3809 Evaluation ModuleUCC3809EVMTexas InstrumentsDevelopment Boards/EVMs

Simulation Models

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
UCC3809-2 Economy Primary Side Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
TPS54331 3A, 28V Input, 570 kHz Step Down SWIFT™ DC/DC Converter with Eco-mode ™ DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.
TPS54550 4.5V to 20V, 6A Synchronous Step Down SWIFT™ Converter DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS TI customers also evaluated this product.

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