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UCC2808-1 Status: ACTIVE

Low Power Current Mode Push-Pull PWM


      
         
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Datasheet

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 UCC2808-1UCC3808-1 
TopologyFull-Bridge, Half-Bridge, Push-Pull  Full-Bridge, 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  8PDIP, 8SOIC  
Regulated Outputs(#)2  2  
 SamplesSamples
 InventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • UC2844: Current-Mode PWM Controller
  • UCC2803: Low-Power BiCMOS Current-Mode PWM
  • UC2825A: High Speed PWM Controller
  • TPS76318: Single Output LDO, 150mA, Fixed(1.8V), Low Quiescent Current, Thermal Protection
  • BQ24704: Low Cost, Host-Controlled Li-Ion and Li-Polymer Battery Charger With Low Iq
  • TPS79318: Single Output LDO, 200mA, Fixed(1.8V), High PSRR, Low Noise

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Product Information

Features

  • Dual Output Drive Stages in Push-Pull Configuration
  • 130-uA Typical Starting Current
  • 1-mA Typical Run Current
  • Operation to 1-MHz
  • Internal Soft Start
  • On Chip Error Amplifier With 2-MHz Gain Bandwidth Product
  • On Chip VDD Clamping
  • Output Drive Stages Capable Of 500-mA Peak Source Current, 1-A Peak Sink Current

Description

The UCC3808 is a family of BiCMOS push-pull, high-speed, low-power, pulse-width modulators. The UCC3808 contains all of the control and drive circuitry required for off-line or dc-to-dc fixed frequency current-mode switching power supplies with minimal external parts count.

The UCC3808 dual output drive stages are arranged in a push-pull configuration. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 60 ns to 200 ns depending on the values of the timing capacitor and resistors, thus limiting each output stage duty cycle to less than 50%.

The UCC3808 family offers a variety of package temperature range options, and choice of undervoltage lockout levels.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
UCC2808D-1ACTIVE-40 to 851.45 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC2808D-1G4ACTIVE-40 to 851.45 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC2808DTR-1ACTIVE-40 to 851.35 | 1kuSOIC (D) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC2808DTR-1G4ACTIVE-40 to 851.35 | 1kuSOIC (D) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC2808N-1ACTIVE-40 to 851.75 | 1kuPDIP (P) | 8 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC2808N-1G4ACTIVE-40 to 851.75 | 1kuPDIP (P) | 8 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint

* 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, 25 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksUCC2808D-1
AmericasArrow 120
Newark 39
Rochester Electronics 675
AsiaFarnell Asia 39
WPI 72
EuropeSpoerle 225
WorldwideDigiKey >1k
Mouser Electronics 2
TI Lead Time*: 20 WeeksUCC2808D-1G4
AmericasAvnet 205
AsiaFarnell Asia 173
EuropeFarnell 103
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC2808DTR-1
AmericasRochester Electronics >1k
EuropeAvnet-SILICA >1k
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC2808DTR-1G4
WorldwideDigiKey  Available
TI Lead Time*: 14 WeeksUCC2808N-1
AmericasAvnet 47
Rochester Electronics >1k
WorldwideDigiKey 180
TI Lead Time*: 14 WeeksUCC2808N-1G4
WorldwideDigiKey  Available
Mouser Electronics 190
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
UCC2808D-1 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC2808D-1G4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC2808DTR-1 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC2808DTR-1G4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC2808N-1 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg TypeViewView
UCC2808N-1G4 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 UCC2808-1 Help

Datasheet

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UC2825A High Speed PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UCC2808-2 Low Power Current Mode Push-Pull PWM AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
TPS76318 Single Output LDO, 150mA, Fixed(1.8V), Low Quiescent Current, Thermal Protection LINEAR REGULATORS-SINGLE CHANNEL LDO TI customers also evaluated this product.
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