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UCC38C42 Status: ACTIVE

BiCMOS Low-Power Current Mode PWM Controller


      
         
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Datasheet

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 UCC28C42 UCC38C42
TopologyBoost, Flyback, Forward  Boost, Buck, Flyback, Forward  
Control MethodCurrent Mode  Current Mode  
Duty Cycle(Max)(%)100  100  
PWM Outputs(#)1  1  
Frequency(Max)(kHz)1000  1000  
UVLO Thresholds On/Off(V)14.5/9  14.5/9  
Pin/Package8MSOP, 8PDIP, 8SOIC  8MSOP, 8PDIP, 8SOIC  
Regulated Outputs(#)1  1  
Thermal ShutdownNo  No  
 SamplesSamples
 InventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • UCC38C43: BiCMOS Low-Power Current Mode PWM Controller
  • UC3842: Current-Mode PWM Controller
  • UCC28C42: BiCMOS Low Current 8 Pin PWM Current Mode Controller

Product Information

Features

  • Enhanced Replacement for UC3842A Family With Pin-to-Pin Compatibility
  • 1-MHz Operation
  • 50-µA Start-Up Current, 100-µA Maximum
  • Low Operating Current of 2.3 mA at 52 kHz
  • Fast 35-ns Cycle-by-Cycle Overcurrent Limiting
  • ±1-A Peak Output Current
  • Rail-to-Rail Output Swings with 25-ns Rise and 20-ns Fall Times
  • ±1% Initial Trimmed 2.5-V Error Amplifier Reference
  • Trimmed Oscillator Discharge Current
  • New Under Voltage Lockout Versions
  • MSOP-8 Package Minimizes Board Space
  • APPLICATIONS
    • Switch-Mode Power Supplies
    • dc-to-dc Converters
    • Board Mount Power Modules

Description

UCC38C4x family is a high-performance current-mode PWM controller. It is an enhanced BiCMOS version with pin-for-pin compatibility to the industry standard UC384xA family and UC384x family of PWM controllers. In addition, lower startup voltage versions of 7 V are offered as UCC38C40 and UCC38C41.

Providing necessary features to control fixed frequency, peak current-mode power supplies, this family offers the following performance advantages. The device offers high-frequency operation up to 1 MHz with low start-up and operating currents, thus minimizing start-up loss and low operating power consumption for improved efficiency. The device also features a very fast current-sense-to-output delay time of 35 ns and a ±1 A peak output current capability with improved rise and fall times for driving large external MOSFETs directly.

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Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
UCC38C42DACTIVE0 to 700.75 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC38C42DG4ACTIVE0 to 700.75 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC38C42DGKACTIVE0 to 700.90 | 1kuMSOP (DGK) | 8 View 100 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC38C42DGKG4ACTIVE0 to 700.90 | 1kuMSOP (DGK) | 8 View 100 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC38C42DGKRACTIVE0 to 700.70 | 1kuMSOP (DGK) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC38C42DGKRG4ACTIVE0 to 700.70 | 1kuMSOP (DGK) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC38C42DRACTIVE0 to 700.70 | 1kuSOIC (D) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC38C42DRG4ACTIVE0 to 700.70 | 1kuSOIC (D) | 8 View 2500 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UCC38C42PACTIVE0 to 700.90 | 1kuPDIP (P) | 8 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC38C42PG4ACTIVE0 to 700.90 | 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 9:48 AM GMT, 22 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksUCC38C42D
AmericasRochester Electronics 65
AsiaWPI 87
EuropeAvnet-SILICA 275
WorldwideDigiKey 684
Mouser Electronics 325
TI Lead Time*: 20 WeeksUCC38C42DG4
AsiaFarnell Asia 309
EuropeFarnell 259
WorldwideDigiKey  Available
TI Lead Time*: 14 WeeksUCC38C42DGK
AmericasRochester Electronics >1k
WorldwideDigiKey 160
TI Lead Time*: 14 WeeksUCC38C42DGKG4
WorldwideDigiKey  Available
Mouser Electronics 297
TI Lead Time*: 14 WeeksUCC38C42DGKR
AmericasAvnet >1k
WorldwideDigiKey  Available
TI Lead Time*: 14 WeeksUCC38C42DGKRG4
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC38C42DR
AmericasAvnet >1k
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC38C42DRG4
WorldwideDigiKey  Available
TI Lead Time*: 14 WeeksUCC38C42P
AmericasRochester Electronics 94
AsiaWPI 79
WorldwideDigiKey 68
Mouser Electronics 224
TI Lead Time*: 14 WeeksUCC38C42PG4
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
UCC38C42D RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC38C42DG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC38C42DGK RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC38C42DGKG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC38C42DGKR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC38C42DGKRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UCC38C42DR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC38C42DRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
UCC38C42P RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg TypeViewView
UCC38C42PG4 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 UCC38C42 Help

Datasheet

Application Notes

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User Guides

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Reference Designs

Description Part # Company
Boost with Vin 12 V and Vout 24 V PMP104 Texas Instruments

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
UCC38C43 BiCMOS Low-Power Current Mode PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UC3842 Current-Mode PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UCC28C42 BiCMOS Low Current 8 Pin PWM Current Mode Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.

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