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UCC28085 Status: ACTIVE

Current Mode Push-Pull PWM With Programmable Slope Compensation


      
         
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 UCC28085UCC38085 
TopologyHalf-Bridge, Push-Pull  Boost, Buck, Half-Bridge, Push-Pull  
Control MethodCurrent Mode  Current Mode  
Duty Cycle(Max)(%)50  50  
PWM Outputs(#)2  2  
Frequency(Max)(kHz)1000  1000  
UVLO Thresholds On/Off(V)12.5/8.3  12.5/8.3  
Pin/Package8PDIP, 8SOIC, 8TSSOP  8PDIP, 8SOIC, 8TSSOP  
Regulated Outputs(#)2  2  
 SamplesSamples
 InventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • UCC28086: Current Mode Push-Pull PWM With Programmable Slope Compensation
  • UC28025: Economy High Speed PWM Controller
  • UCC38083: Current Mode Push-Pull PWM With Programmable Slope Compensation

More Related Products

Product Information

Features

  • Programmable Slope Compensation
  • Internal Soft-Start on the UCC38083/4
  • Cycle-by-Cycle Current Limiting
  • Low Start-Up Current of 120 µA and 1.5 mA Typical Run Current
  • Single External Component Oscillator Programmable from 50 kHz to 1 MHz
  • High-Current Totem-Pole Dual Output Stage Drives Push-Pull Configuration with 1-A Sink and 0.5-A Source Capability
  • Current Sense Discharge Transistor to Improve Dynamic Response
  • Internally Trimmed Bandgap Reference
  • Undervoltage Lockout with Hysteresis
  • APPLICATIONS
    • High-Efficiency Switch-Mode Power Supplies
    • Telecom dc-to-dc Converters
    • Point-of-Load or Point-of-Use Power Modules
    • Low-Cost Push-Pull and Half-Bridge Applications

Description

The UCC38083/4/5/6 is a family of BiCMOS pulse width modulation (PWM) controllers for dc-to-dc or off-line fixed-frequency current-mode switching power supplies. The dual output stages are configured for the push-pull topology. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 110 ns, limiting each output’s duty cycle to less than 50%.

The new UCC3808x family is based on the UCC3808A architecture. The major differences include the addition of a programmable slope compensation ramp to the CS signal and the removal of the error amplifier. The current flowing out of the ISET pin through an external resistor is monitored internally to set the magnitude of the slope compensation function.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
UCC28085DACTIVE-40 to 851.60 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC28085DG4ACTIVE-40 to 851.60 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC28085DRACTIVE-40 to 851.45 | 1kuSOIC (D) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC28085DRG4ACTIVE-40 to 851.45 | 1kuSOIC (D) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC28085PACTIVE-40 to 851.60 | 1kuPDIP (P) | 8 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC28085PG4ACTIVE-40 to 851.60 | 1kuPDIP (P) | 8 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC28085PWACTIVE-40 to 851.60 | 1kuTSSOP (PW) | 8 View 150 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC28085PWG4ACTIVE-40 to 851.60 | 1kuTSSOP (PW) | 8 View 150 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC28085PWRACTIVE-40 to 851.45 | 1kuTSSOP (PW) | 8 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC28085PWRG4ACTIVE-40 to 851.45 | 1kuTSSOP (PW) | 8 View 2000 | LARGE T&R 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, 26 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksUCC28085D
AmericasRochester Electronics >1k
WorldwideDigiKey 150
TI Lead Time*: 20 WeeksUCC28085DG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC28085DR
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC28085DRG4
WorldwideDigiKey  Available
TI Lead Time*: 14 WeeksUCC28085P
AmericasRochester Electronics 743
WorldwideDigiKey 130
TI Lead Time*: 14 WeeksUCC28085PG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC28085PW
AmericasRochester Electronics >1k
WorldwideDigiKey 240
TI Lead Time*: 20 WeeksUCC28085PWG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC28085PWR
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC28085PWRG4
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
UCC28085D RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC28085DG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC28085DR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC28085DRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC28085P RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg TypeViewView
UCC28085PG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg TypeViewView
UCC28085PW RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC28085PWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC28085PWR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC28085PWRG4 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 UCC28085 Help

Datasheet

Application Notes

View Application Notes for PWM Power Supply Controllers

User Guides

View User Guides for PWM Power Supply Controllers

Tools & Software

NamePart # Company Tool / Software Type
UCC2540EVM-054 Evaluation ModuleUCC2540EVM-054Texas InstrumentsDevelopment Boards/EVMs

Customers Who Evaluated This Product Also Evaluated...
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UC28025 Economy High Speed PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UCC38083 Current Mode Push-Pull PWM With Programmable Slope Compensation AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UCC25600 8-Pin High-Performance Resonant Mode Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UCC38085 Current Mode Push-Pull PWM With Programmable Slope Compensation AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.

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