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UC1846-SP Status: ACTIVE

Current-Mode PWM Controller


      
         
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Datasheet

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 UC1846-SP
TopologyBoost,Flyback,Forward,Full-Bridge,Half-Bridge,Push-Pull  
Control MethodCurrent Mode  
Duty Cycle(Max)(%)50  
PWM Outputs(#)2  
Frequency(Max)(kHz)450  
UVLO Thresholds On/Off(V)7.7/6.95  
Pin/Package16CDIP, 20LCCC  
Regulated Outputs(#)2  
 Samples
 Inventory

Other qualified versions of UC1846-SP

Version Part Number Definition
Catalog UC1846 TI's standard catalog product
Enhanced Product UC1846-EP Supports Defense, Aerospace and Medical Applications

Customers Who Evaluated This Product Also Evaluated

  • UC1825A-SP: High Speed PWM Controller
  • UC1525B-SP: Regulating Pulse Width Modulators
  • UC2856-Q1: Automotive Catalog Improved Current Mode PWM Controller

More Related Products

Product Information

Features

  • QML-V Qualified, SMD 5962-86806
  • Rad-Tolerant: 30 kRad (Si) TID(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) Radiation tolerance is a typical value based upon initial device qualification with dose rate = 10 mrad/sec. Radiation Lot Acceptance Testing is available - contact factory for details.

Description

The UC1846 control devices provide 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 under-voltage 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, a ±1% trimmed bandgap reference, and low outputs in the OFF state.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsPackage QTY | Package CarrierSymbolsFootprintsSamples
5962-8680601V2AACTIVE-55 to 125214.69 | 100uLCCC (FK) | 20 1 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
5962-8680601VEAACTIVE-55 to 125172.73 | 100uCDIP (J) | 16 1 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
5962-8680603V2AACTIVE-55 to 125240.45 | 100uLCCC (FK) | 20 1 | TUBE  Contact TI Distributor or Sales Office
5962-8680603VEAACTIVE-55 to 125193.45 | 100uCDIP (J) | 16 1 | TUBE  Purchase 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 9:51 AM GMT, 08 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 26 Weeks5962-8680601V2A
None Reported
View Distributors
TI Lead Time*: 26 Weeks5962-8680601VEA
AmericasAvnet 8
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
5962-8680601V2A  TBD POST-PLATE N/A for Pkg TypeViewView
5962-8680601VEA  TBD A42  N/A for Pkg TypeViewView
5962-8680603V2A  TBD POST-PLATE N/A for Pkg TypeViewView
5962-8680603VEA  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 UC1846-SP Help

Datasheet

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
UC1825A-SP High Speed PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UC1525B-SP Regulating Pulse Width Modulators AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UC2856-Q1 Automotive Catalog Improved Current Mode PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
TL494 PWM Control Circuit 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.
UCC28610 12-65W Green-mode Flyback Power Supply Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UC1825-SP 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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