TI Home > Semiconductors > Power Management > AC/DC and DC/DC Power Supplies > Power Factor Correction ICs >

UC1854B Status: ACTIVE

Enhanced High Power Factor Preregulator


      
         
Alert me about changes<br/>to this product


Datasheet

Download - PDF Icon

 UC1854BUC2854B UC3854B 
UVLO Thresholds On/Off(V)10.5/10  10.5/10  10.5/10  
Operating Supply(Max)(V)20  20  20  
Startup Current(mA)0.25  0.25  0.25  
Operating Supply Current(mA)12  12  12  
Vref(V)7.5  7.5  7.5  
Vref tol(%)1.3  1.3  1.3  
Duty Cycle(Max)(%)95  95  95  
Practical Operating Frequency(Max)(MHz)0.2  0.2  0.2  
Pin/Package16CDIP  16PDIP, 16SOIC, 20PLCC  16PDIP, 16SOIC  
RatingMilitary  Catalog  Catalog  
 SamplesSamplesSamples
 InventoryInventoryInventory

Other qualified versions of UC1854B

Version Part Number Definition
Catalog UC3854B TI's standard catalog product

Customers Who Evaluated This Product Also Evaluated

  • UC1854: High Power Factor Preregulator
  • UCC2818-EP: Enhanced Product BiCMOS Power-Factor Preregulator
  • UC3854B: Enhanced High Power Factor Preregulator

More Related Products

Product Information

Features

  • Controls Boost PWM to Near-Unity Power Factor
  • Limits Line Current Distortion To <3%
  • World-Wide Operation Without Switches
  • Accurate Power Limiting
  • Fixed-Frequency Average Current-Mode Control
  • High Bandwidth (5 MHz), Low-Offset Current Amplifier
  • Integrated Current- and Voltage-Amplifier Output Clamps
  • Multiplier Improvements: Linearity, 500 mV VAC Offset (Eliminates External Resistor), 0 V to 5 V Multout Common-Mode Range
  • VREF GOOD Comparator
  • Faster and Improved Accuracy ENABLE Comparator
  • UVLO Options (16 V/10 V or 10.5 V/10 V)
  • 300-µA Start-Up Supply Current

Description

The UC3854A/B products are pin compatibleenhanced versions of the UC3854. Like the UC3854, these products provide all of the functions necessary for active power factor corrected preregulators. The controller achieves near unity power factor by shaping the ac input line current waveform to correspond to the ac input line voltage. To do this the UC3854A/B uses average current mode control. Average current mode control maintains stable, low distortion sinusoidal line current without the need for slope compensation, unlike peak current mode control.

A 1%, 7.5-V reference, fixed frequency oscillator, PWM, voltage amplifierwith soft-start, line voltage feedforward (VRMS squarer), input supply voltage clamp, and over current comparator round out the lilst of feataures.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Replaced ByDSCC #Price | QuantityPackage | PinsPackage QTY | Package CarrierSymbolsFootprintsSamples
5962-9326102M2AOBSOLETE-55 to 125   LCCC (FK) | 20    Download CAD Format for this FootprintNot Available
5962-9326102MEAACTIVE-55 to 125  18.06 | 100uCDIP (J) | 16 1 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC1854BJACTIVE-55 to 125  14.11 | 100uCDIP (J) | 16 1 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office
UC1854BJ883BACTIVE-55 to 125 5962-9326102MEA18.06 | 100uCDIP (J) | 16 1 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office
UC1854BLOBSOLETE-55 to 125UC1854BJ  (L) | 20    Replaced by UC1854BJ
UC1854BL883BOBSOLETE-55 to 125UC1854BJ883B  (L) | 20    Replaced by UC1854BJ883B

* 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 9:55 AM GMT, 25 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 Weeks5962-9326102MEA
AmericasArrow 24
EuropeAvnet-SILICA 3
TI Lead Time*: 20 WeeksUC1854BJ
EuropeArrow Southern Europe 1
TI Lead Time*: 20 WeeksUC1854BJ883B
None Reported
View Distributors
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
5962-9326102MEA  TBD A42  N/A for Pkg TypeViewView
UC1854BJ  TBD A42  N/A for Pkg TypeViewView
UC1854BJ883B  TBD A42  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 UC1854B Help

Datasheet

Application Notes

View Application Notes for Power Factor Correction ICs

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
UC1854 High Power Factor Preregulator AC/DC AND DC/DC POWER SUPPLIES-POWER FACTOR CORRECTION ICS TI customers also evaluated this product.
UCC2818-EP Enhanced Product BiCMOS Power-Factor Preregulator AC/DC AND DC/DC POWER SUPPLIES-POWER FACTOR CORRECTION ICS TI customers also evaluated this product.
UC3854B Enhanced High Power Factor Preregulator AC/DC AND DC/DC POWER SUPPLIES-POWER FACTOR CORRECTION ICS TI customers also evaluated this product.
UCC28019A 8-Pin Continuous Conduction Mode (CCM) PFC Controller AC/DC AND DC/DC POWER SUPPLIES-POWER FACTOR CORRECTION ICS TI customers also evaluated this product.

Support and Community

Customer Tags Help

No Tags are Available for this Part Number

Other Support



Click Here