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UC3824 Status: ACTIVE

High Speed PWM Controller


      
         
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Datasheet

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 UC2824 UC3824
TopologyBoost  Boost, Buck  
Control MethodCurrent Mode  Current Mode, Voltage Mode  
Duty Cycle(Max)(%)100  100  
PWM Outputs(#)2  2  
Frequency(Max)(kHz)1000  1000  
UVLO Thresholds On/Off(V)9.2/8.4  9.2/8.4  
Pin/Package16PDIP, 16SOIC, 20PLCC  16PDIP, 16SOIC  
Regulated Outputs(#)2  2  
 SamplesSamples
 InventoryInventory

Customers Who Evaluated This Product Also Evaluated

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  • UCC3895: BiCMOS Advanced Phase Shift PWM Controller
  • UC3823: High Speed PWM Controller
  • TPS65950: Integrated Power Management IC with 3 DC/DC's, 11 LDO's, Audio Codec, USB HS Transceiver, Charger
  • LM317: 3/4 Pin 1.5A Adjustable Positive Voltage Regulator
  • TPS79301: Single Output LDO, 200mA, Adj.(1.2 to 5.5V), High PSRR, Low Noise

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Product Information

Features

  • Complementary Outputs
  • Practical Operation Switching Frequenciesto 1 MHz
  • 50-ns Propagation Delay to Output
  • High Current Dual Totem Pole Outputs (1.5 A Peak)
  • Wide Bandwidth Error Amplifier
  • Fully Latched Logic With Double Pulse Suppression
  • Pulse-by-Pulse Current Limiting
  • Soft Start/Maximum Duty Cycle Control
  • Under-Voltage Lockout with Hysteresis
  • Low Start Up Current (1.1 mA)
  • Trimmed Bandgap Reference (5.1 V ± 1%)

Description

The UC1824 family of PWM control devices 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 with a 1-V threshold, a TTL compatible shutdown port, and a soft-start pin which doubles as a maximum duty cycle clamp. The logic is fully latched to provide jitter free operation and prohibit multiple pulses at an output. An under-voltage lockout section with 800 mV 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
UC3824DWACTIVE0 to 708.20 | 1kuSOIC (DW) | 16 View 40 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC3824DWG4ACTIVE0 to 708.20 | 1kuSOIC (DW) | 16 View 40 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC3824DWTRACTIVE0 to 707.45 | 1kuSOIC (DW) | 16 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC3824DWTRG4ACTIVE0 to 707.45 | 1kuSOIC (DW) | 16 View 2000 | LARGE T&R Download CAD Format for this Symbol Download CAD Format for this FootprintPurchase Samples
UC3824NACTIVE0 to 708.20 | 1kuPDIP (N) | 16 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UC3824NG4ACTIVE0 to 708.20 | 1kuPDIP (N) | 16 View 25 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint

* 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 9:52 AM GMT, 22 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksUC3824DW
AmericasArrow 150
WorldwideDigiKey 101
Mouser Electronics 80
TI Lead Time*: 20 WeeksUC3824DWG4
WorldwideDigiKey  Available
Mouser Electronics 69
TI Lead Time*: 20 WeeksUC3824DWTR
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUC3824DWTRG4
WorldwideDigiKey  Available
TI Lead Time*: 14 WeeksUC3824N
AmericasNewark 50
Rochester Electronics >1k
WorldwideDigiKey 102
Mouser Electronics 69
TI Lead Time*: 14 WeeksUC3824NG4
WorldwideDigiKey  Available
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
UC3824DW RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC3824DWG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC3824DWTR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC3824DWTRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
UC3824N RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU N/A for Pkg TypeViewView
UC3824NG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU 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 UC3824 Help

Datasheet

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