TI Home > Semiconductors > Power Management > Linear Regulators > Single Channel LDO >

UCC383-3 Status: ACTIVE

Single Output LDO, 3.0A, Fixed(3.3V), Reverse Current Protection, Thermal Shutdown


      
         
Alert me about changes<br/>to this product

 UCC283-3 UCC283-5 UCC283-ADJ UCC383-3UCC383-5 UCC383-ADJ 
Iout(Max)(A)3  3  3  3  3  3  
Vdo(Typ)(mV)500  400  400  500  400  400  
Iq(Typ)(mA)0.4  0.4  0.4  0.4  0.4  0.4  
Vin(Min)(V)3.85  5.45  2.8  3.85  5.45  2.8  
Vin(Max)(V)9  9  9  9  9  9  
Vout(Min)(V)3.3  5   3.3  5   
Vout(Max)(V)3.3  5   3.3  5   
Vout Adj(Min)(V)  1.22    1.22  
Vout Adj(Max)(V)  8.5    8.5  
Accuracy(%)   2.5  2.5  2.5  
Output Capacitor TypeTantalum  Tantalum  Tantalum  Tantalum  Tantalum  Tantalum  
Fixed Output Options(V)3.3  5   3.3  5   
Pin/Package3DDPAK/TO-263, 3TO-220  3DDPAK/TO-263, 3TO-220  5DDPAK/TO-263, 5TO-220  3DDPAK/TO-263, 3TO-220  3DDPAK/TO-263, 3TO-220  5DDPAK/TO-263, 5TO-220  
RatingCatalog  Catalog  Catalog  Catalog  Catalog  Catalog  
Regulated Outputs(#)1  1  1  1  1  1  
 SamplesSamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • UCC283-3: Single Output LDO, 3.0A, Fixed(3.3V), Reverse Current Protection, Thermal Shutdown

Product Information

Features

  • Precision Positive Linear Series Pass Voltage Regulation
  • 0.45 V Dropout at 3 A
  • 50 mV Dropout at 10 mA
  • Quiescent Current Under 650 µA Irrespective of Load
  • Adjustable (5-Lead) Output Voltage Version
  • Fixed (3-Lead) Versions for 3.3-V and 5-V Outputs
  • Logic Shutdown Capability
  • Short-Circuit Power Limit of (3% × VIN × ISHORT)
  • Low VOUT to VIN Reverse Leakage
  • Thermal Shutdown

All trademarks are the property of their respective owners.

Description

The UCC283–3/–5/–ADJ family of positive linear series pass voltage regulators are tailored for low-drop-out applications where low quiescent power is important. Fabricated with a BiCMOS technology ideally suited for low input-to-output differential applications, the UCC283–5 passes 3 A while requiring only 0.45 V of typical input voltage headroom (ensured 0.6-V dropout).

These regulators include reverse voltage sensing that prevents current in the reverse direction. Quiescent current is always less than 650 µA. These devices have been internally compensated in such a way that the need for a minimum output capacitor has been eliminated.

UCC283–3 and UCC283–5 versions are in 3-lead packages and have preset outputs at 3.3 V and 5.0 V respectively. The output voltage is regulated to 1.5% at room temperature. The UCC283–ADJ version, in a 5-lead package, regulates the output voltage programmed by an external resistor ratio.

Short-circuit current is internally limited. The device responds to a sustained overcurrent condition by turning off after a tON time delay. The device then stays off for a period, tOFF, that is 32 times the tON delay. The device then begins pulsing on and off at the tON/(tON +tOFF) duty cycle of 3%. This drastically reduces the power dissipation during short-circuit and means heat sinks need only accommodate normal operation. On the 3-leaded versions of the device tON is fixed at 750 µs, on the adjustable 5-leaded versions an external capacitor sets the on time. The off time is always 32 × tON. The external timing control pin, CT, on the 5-leaded versions also serves as a shutdown input when pulled low.

Internal power dissipation is further controlled with thermal overload protection circuitry. Thermal shutdown occurs if the junction temperature exceeds 165°C. The chip remains off until the temperature has dropped 20°C.

The UCC283 series is specified for operation over the industrial range of –40°C to 85°C, and the UCC383 series is specified from 0°C to 70°C. These devices are available in 3- and 5-pin TO–220 and TO–263 power packages.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Replaced ByPrice | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
UCC383T-3ACTIVE0 to 70 3.00 | 1kuTO-220 (KC) | 3 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC383T-3G3ACTIVE0 to 70 3.00 | 1kuTO-220 (KC) | 3 View 50 | TUBE Download CAD Format for this Symbol Download CAD Format for this Footprint
UCC383TD-3OBSOLETE0 to 70UCC383TDKTTT-3 DDPAK/TO-263 (KTT) | 3 View   Download CAD Format for this Symbol Replaced by UCC383TDKTTT-3
UCC383TDKTTT-3ACTIVE0 to 70 2.70 | 1kuDDPAK/TO-263 (KTT) | 3 View 50 | SMALL T&R Download CAD Format for this Symbol 
UCC383TDKTTT-3G3ACTIVE0 to 70 2.70 | 1kuDDPAK/TO-263 (KTT) | 3 View 50 | SMALL T&R Download CAD Format for this Symbol 
UCC383TDTR-3ACTIVE0 to 70 2.70 | 1kuDDPAK/TO-263 (KTT) | 3 View 500 | LARGE T&R Download CAD Format for this Symbol Purchase Samples
UCC383TDTR-3G3ACTIVE0 to 70 2.70 | 1kuDDPAK/TO-263 (KTT) | 3 View 500 | LARGE T&R Download CAD Format for this Symbol 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 9:45 AM GMT, 08 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 1 WeekUCC383T-3
AmericasNewark 132
Rochester Electronics >1k
AsiaFarnell Asia 132
EuropeEBV Elektronik 25
WorldwideDigiKey 119
TI Lead Time*: 1 WeekUCC383T-3G3
AmericasAvnet 88
WorldwideDigiKey  Available
TI Lead Time*: 4 WeeksUCC383TDKTTT-3
AmericasAvnet 100
Rochester Electronics >1k
AsiaFarnell Asia 32
EuropeFarnell 27
WorldwideDigiKey 277
Mouser Electronics 93
TI Lead Time*: 4 WeeksUCC383TDKTTT-3G3
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksUCC383TDTR-3
AmericasAvnet 500
Rochester Electronics 1k
TI Lead Time*: 20 WeeksUCC383TDTR-3G3
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
UCC383T-3 RoHS Compliant Green (RoHS & no Sb/Br) CU SN N/A for Pkg TypeViewView
UCC383T-3G3 RoHS Compliant Green (RoHS & no Sb/Br) CU SN N/A for Pkg TypeViewView
UCC383TDKTTT-3 RoHS Compliant Green (RoHS & no Sb/Br) CU SN Level-2-260C-1 YEARViewView
UCC383TDKTTT-3G3 RoHS Compliant Green (RoHS & no Sb/Br) CU SN Level-2-260C-1 YEARViewView
UCC383TDTR-3 RoHS Compliant Green (RoHS & no Sb/Br) CU SN Level-2-260C-1 YEARViewView
UCC383TDTR-3G3 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 UCC383-3 Help

Datasheet

Application Notes

View Application Notes for Single Channel LDO

User Guides

View User Guides for Single Channel LDO

Customers Who Evaluated This Product Also Evaluated...
Part # Name Product Family Comments
UCC283-3 Single Output LDO, 3.0A, Fixed(3.3V), Reverse Current Protection, Thermal Shutdown LINEAR REGULATORS-SINGLE CHANNEL LDO TI customers also evaluated this product.

Support and Community

Customer Tags Help

No Tags are Available for this Part Number

Other Support



Click Here