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UC1846-EP Status: ACTIVE

Enhanced Product Current-Mode Pwm Controller


      
         
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 UC1846-EP
TopologyBoost, Flyback, Forward, Full-Bridge, Half-Bridge, Push-Pull  
Control MethodCurrent Mode  
Duty Cycle(Max)(%)50  
PWM Outputs(#)2  
Frequency(Max)(kHz)450  
Pin/Package16SOIC  
Regulated Outputs(#)2  
 Samples
 Inventory

Other qualified versions of UC1846-EP

Version Part Number Definition
Catalog UC1846 TI's standard catalog product
Space UC1846-SP Radiation tolerant, ceramic packaging and qualified for use in Space-based application

Customers Who Evaluated This Product Also Evaluated

  • UC1846: Current-Mode PWM Controller
  • UC2856Q: Improved Current Mode PWM Controller
  • UC1825A-SP: High Speed PWM Controller

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Product Information

Features

  • Controlled Baseline
    • One Assembly/Test Site, One Fabrication Site
  • Extended Temperature Performance of -55°C to 125°C
  • Enhanced Diminishing Manufacturing Sources (DMS) Support
  • Enhanced Product-Change Notification
  • Qualification Pedigree(1)
  • Automatic Feed-Forward Compensation
  • Programmable Pulse-by-Pulse Current Limiting
  • Automatic Symmetry Correction in Push-Pull Configuration
  • Enhanced Load-Response Characteristics
  • Parallel Operation Capability for Modular Power Systems
  • Differential Current-Sense Amplifier With Wide Common-Mode Range
  • Double Pulse Suppression
  • 500-mA (Peak) Totem-Pole Outputs
  • ±1% Bandgap Reference
  • Undervoltage Lockout
  • Soft-Start Capability
  • Shutdown Terminal
  • 500-kHz Operation

(1)Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified
performance and environmental limits.

DESCRIPTION/ORDERING INFORMATION

The UC1846-EP control IC provides all of the necessary features to implement fixed-frequency, current-mode control schemes, while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line regulation, enhanced load-response characteristics, and a simpler, easier-to-design control loop. Topological advantages include inherent pulse-by-pulse current-limiting capability, automatic symmetry correction for push-pull converters, and the ability to parallel power modules, while maintaining equal current sharing.

Protection circuitry includes built-in undervoltage lockout and programmable current limit, in addition to soft-start capability. A shutdown function is also available, which can initiate either a complete shutdown with automatic restart or latch the supply off.

Other features include fully latched operation, double pulse suppression, deadline adjust capability, and a ±1% trimmed bandgap reference.

The UC1846-EP features low outputs in the OFF state.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)DSCC #Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
UC1846MDWREPACTIVE-55 to 125V62/06606-01XE3.61 | 100uSOIC (DW) | 16 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office
V62/06606-01XEACTIVE-55 to 125 3.61 | 100uSOIC (DW) | 16 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintContact TI Distributor or Sales Office

* 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, 20 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 16 WeeksUC1846MDWREP
AmericasRochester Electronics >1k
TI Lead Time*: 16 WeeksV62/06606-01XE
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
UC1846MDWREP RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
V62/06606-01XE RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView

* 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 UC1846-EP Help

Datasheet

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
UC1846 Current-Mode PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UC2856Q Improved Current Mode PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UC1825A-SP High Speed PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UC1846-SP Current-Mode PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UC28025 Economy High Speed PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.

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