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UC2823 Status: ACTIVE

High Speed PWM Controller


      
         
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Datasheet

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Functional Block Diagram


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 UC1823 UC2823UC3823 
TopologyBoost, Buck, Flyback, Forward  Boost, Buck, Flyback, Forward  Boost, Buck, Flyback, Forward  
Control MethodCurrent Mode  Current Mode  Current Mode, Voltage Mode  
Duty Cycle(Max)(%)100  100  100  
PWM Outputs(#)1  1  1  
Frequency(Max)(kHz)1000  1000  1000  
UVLO Thresholds On/Off(V)9.2/8.4  9.2/8.4  9.2/8.4  
Pin/Package16CDIP, 20LCCC  16PDIP, 16SOIC, 20PLCC  16PDIP, 16SOIC, 20PLCC  
Regulated Outputs(#)1  1  1  
 SamplesSamplesSamples
 InventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • UC3823B: High Speed PWM Controller
  • UC2524A: Advanced Regulating Pulse Width Modulators
  • UC3823: High Speed PWM Controller
  • TPS2066: Dual 1A Current-Limited, Power-Distribution Switches
  • TPS2111: Dual In/Single Out Autoswitching Power MUX, Manual/Auto Sw, Adj. Cur Limit, Adj. Vol Threshold
  • TPS76333: Single Output LDO, 150mA, Fixed(3.3V), Low Quiescent Current, Thermal Protection

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Product Information

Features

  • Compatible with Voltage or Current-Mode Topologies
  • Practical Operation @ Switching Frequencies to 1.0MHz
  • 50ns Propagation Delay to Output
  • High Current Totem Pole Output (1.5A peak)
  • Wide Bandwidth Error Amplifier
  • Fully Latched Logic with Double Pulse Suppression
  • Pulse-by-Pulse Current Limiting
  • Soft Start/Max. Duty Cycle Control
  • Under-Voltage Lockout with Hysteresis
  • Low Start Up Current (1.1mA)
  • Trimmed Bandgap Reference (5.1V ±1%)

Description

The UC1823 family of PWM control ICs is optimized for high frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the error amplifier. This controller is designed for use in either current-mode or voltage-mode systems with the capability for input voltage feed-forward.

Protection circuitry includes a current limit comparator, a TTL compatible shutdown port, and a soft start pin which will double as a maximum duty cycle clamp. The logic is fully latched to provide jitter free operation and prohibit multiple pulses at the output. An under-voltage lockout section with 800mV of hysteresis assures low start up current.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
UC2823DWACTIVE-40 to 852.15 | 1kuSOIC (DW) | 16 View 40 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC2823DWG4ACTIVE-40 to 852.15 | 1kuSOIC (DW) | 16 View 40 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC2823DWTRACTIVE-40 to 851.70 | 1kuSOIC (DW) | 16 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC2823DWTRG4ACTIVE-40 to 851.70 | 1kuSOIC (DW) | 16 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC2823NACTIVE-40 to 852.15 | 1kuPDIP (N) | 16 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC2823NG4ACTIVE-40 to 852.15 | 1kuPDIP (N) | 16 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC2823QACTIVE-40 to 852.15 | 1kuPLCC (FN) | 20 View 46 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC2823QG3ACTIVE-40 to 852.15 | 1kuPLCC (FN) | 20 View 46 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC2823QTRACTIVE-40 to 851.70 | 1kuPLCC (FN) | 20 View 1000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC2823QTRG3ACTIVE-40 to 851.70 | 1kuPLCC (FN) | 20 View 1000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase 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 9:54 AM GMT, 25 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksUC2823DW
AmericasAvnet 160
Rochester Electronics >1k
EuropeAvnet-SILICA 620
Compel 986
WorldwideMouser Electronics 96
TI Lead Time*: 20 WeeksUC2823DWG4
AmericasAvnet 160
EuropeEBV Elektronik 19
TI Lead Time*: 20 WeeksUC2823DWTR
AmericasArrow >1k
Rochester Electronics >1k
TI Lead Time*: 20 WeeksUC2823DWTRG4
None Reported
View Distributors
TI Lead Time*: 14 WeeksUC2823N
AmericasRochester Electronics >1k
WorldwideDigiKey 101
TI Lead Time*: 14 WeeksUC2823NG4
WorldwideDigiKey  Available
TI Lead Time*: 10 WeeksUC2823Q
AmericasRochester Electronics 368
TI Lead Time*: 10 WeeksUC2823QG3
None Reported
View Distributors
TI Lead Time*: 4 WeeksUC2823QTR
AmericasRochester Electronics >1k
TI Lead Time*: 4 WeeksUC2823QTRG3
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
UC2823DW RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC2823DWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC2823DWTR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC2823DWTRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC2823N RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg TypeViewView
UC2823NG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg TypeViewView
UC2823Q RoHS Compliant Green (RoHS & no Sb/Br) CU SN Level-2-260C-1 YEARViewView
UC2823QG3 RoHS Compliant Green (RoHS & no Sb/Br) CU SN Level-2-260C-1 YEARViewView
UC2823QTR RoHS Compliant Green (RoHS & no Sb/Br) CU SN Level-2-260C-1 YEARViewView
UC2823QTRG3 RoHS Compliant Green (RoHS & no Sb/Br) CU SN Level-2-260C-1 YEARViewView

* 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 UC2823 Help

Datasheet

Application Notes

View Application Notes for PWM Power Supply Controllers

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
UC3823B High Speed PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UC2524A Advanced Regulating Pulse Width Modulators AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UC3823 High Speed PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UC2825 High Speed PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UC2844A Current Mode PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UCC3581 Micropower Voltage Mode PWM AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
UC3823A High Speed PWM Controller AC/DC AND DC/DC POWER SUPPLIES-PWM POWER SUPPLY CONTROLLERS TI customers also evaluated this product.
TPS2066 Dual 1A Current-Limited, Power-Distribution Switches PCMCIA AND USB-USB POWER SWITCHES TI customers also evaluated this product.
TPS2111 Dual In/Single Out Autoswitching Power MUX, Manual/Auto Sw, Adj. Cur Limit, Adj. Vol Threshold POWER MUXES AND CURRENT LIMITED SWITCHES-POWER MUXES TI customers also evaluated this product.
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