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UC1825A-SP Status: ACTIVE

High Speed PWM Controller


      
         
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Datasheet

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 UC1825A-SP
TopologyBoost,Flyback,Forward,Full-Bridge,Half-Bridge,Push-Pull  
Control MethodCurrent Mode  
Duty Cycle(Max)(%)50  
PWM Outputs(#)2  
Frequency(Max)(kHz)1000  
UVLO Thresholds On/Off(V)9.2/8.4  
Pin/Package16CDIP, 20LCCC  
Regulated Outputs(#)2  
 Samples
 Inventory

Other qualified versions of UC1825A-SP

Version Part Number Definition
Catalog UC1825A TI's standard catalog product

Customers Who Evaluated This Product Also Evaluated

  • UC1846-SP: Current-Mode PWM Controller
  • UCC28610: 12-65W Green-mode Flyback Power Supply Controller
  • UC1825-SP: High Speed PWM Controller

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Product Information

Features

  • QML-V Qualified, SMD 5962-87681
  • Rad-Tolerant: 30 kRad (Si) TID(1)
  • Compatible With Voltage-Mode or Current-Mode Control Methods
  • Practical Operation at Switching Frequencies to 1 MHz
  • 50-ns Propagation Delay to Output
  • High-Current Dual Totem Pole Outputs
    (2-A Peak)
  • Trimmed Oscillator Discharge Current
  • Low 100-µA Startup Current
  • Pulse-by-Pulse Current Limiting Comparator
  • Latched Overcurrent Comparator With Full Cycle Restart

(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 UC1825A PWM controller is an improved version of the standard UC1825 family. Performance enhancements have been made to several of the circuit blocks. Error amplifier gain bandwidth product is 12 MHz, while input offset voltage is 2 mV. Current limit threshold is assured to a tolerance of 5%. Oscillator discharge current is specified at 10 mA for accurate dead time control. Frequency accuracy is improved to 6%. Startup supply current, typically 100 µA, is ideal for off-line applications. The output drivers are redesigned to actively sink current during UVLO at no expense to the startup current specification. In addition each output is capable of 2-A peak currents during transitions.

Functional improvements have also been implemented in this family.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsPackage QTY | Package CarrierSymbolsFootprintsSamples
5962-8768102V2AACTIVE-55 to 125299.06 | 100uLCCC (FK) | 20 1 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
5962-8768102VEAACTIVE-55 to 125347.13 | 100uCDIP (J) | 16 1 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
5962-8768105VEAACTIVE-55 to 125374.22 | 100uCDIP (J) | 16 1 | TUBE  Contact 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 9:56 AM GMT, 24 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 26 Weeks5962-8768102V2A
None Reported
View Distributors
TI Lead Time*: 26 Weeks5962-8768102VEA
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
5962-8768102V2A  TBD POST-PLATE N/A for Pkg TypeViewView
5962-8768102VEA  TBD A42  N/A for Pkg TypeViewView
5962-8768105VEA  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 UC1825A-SP Help

Datasheet

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
UC1846-SP Current-Mode PWM 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.
UCC28231 Advanced PWM Controller for Bus Converters 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.
UCC3895 BiCMOS Advanced Phase Shift PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.

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