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REG103-27 Status: NRND

Single Output LDO, 500mA, Fixed(2.7V), Low Noise, Fast Transient Response


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Alert Icon   NRND: This product is not recommended for new designs. However, the device, tool, or software continues to be in production to support existing customers. TI does not recommend using this part in a new design. TI encourages designers to consider alternative products for new designs.

Replaced By:

  • REG104-27 The device is an EXACT EQUIVALENT in functionality and parametrics to the compared device. 

Datasheet

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 REG103-25 REG103-33 REG103-5 REG103-A 
Iout(Max)(A)0.5  0.5  0.5  0.5  
Vdo(Typ)(mV)115  115  160  115  
Iq(Typ)(mA)0.5  0.5  0.5  0.5  
Vin(Min)(V)2.1  2.1  2.1  2.1  
Vin(Max)(V)15  15  15  15  
Vout(Min)(V)2.5  3.3  5   
Vout(Max)(V)2.5  3.3  5   
Vout Adj(Min)(V)   1.295  
Vout Adj(Max)(V)   5.5  
Accuracy(%)2  2  2  2  
Output Capacitor TypeCapacitor Free  Capacitor Free  Capacitor Free  Capacitor Free  
Fixed Output Options(V)2.5  3.3  5   
Pin/Package5DDPAK/TO-263, 6SOT-223, 8SOIC  5DDPAK/TO-263, 6SOT-223, 8SOIC  5DDPAK/TO-263, 6SOT-223, 8SOIC  5DDPAK/TO-263, 6SOT-223, 8SOIC  
RatingCatalog  Catalog  Catalog  Catalog  
Regulated Outputs(#)1  1  1  1  
 SamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventory

Product Information

Features

  • NEW DMOS TOPOLOGY:
    Ultra Low Dropout Voltage:
    115mV Typ at 500mA and 3.3V Output
    Output Capacitor NOT Required for Stability
  • FAST TRANSIENT RESPONSE
  • VERY LOW NOISE: 33µVrms
  • HIGH ACCURACY: ±2% max
  • HIGH EFFICIENCY:
    IGND = 1mA at IOUT = 500mA
    Not Enabled: IGND = 0.5µA
  • 2.5V, 2.7V, 3.0V, 3.3V, 5.0V, AND ADJUSTABLE OUTPUT VERSIONS
  • FOLDBACK CURRENT LIMIT
  • THERMAL PROTECTION
  • OUTPUT VOLTAGE ERROR INDICATOR(1)
  • SMALL SURFACE-MOUNT PACKAGES: SOT223-5, DDPAK-5, SO-8
  • APPLICATIONS
    • PORTABLE COMMUNICATION DEVICES
    • BATTERY-POWERED EQUIPMENT
    • PERSONAL DIGITAL ASSISTANTS
    • MODEMS
    • BAR-CODE SCANNERS
    • BACKUP POWER SUPPLIES

All trademarks are the property of their respective owners.

Description

The REG103 is a family of low-noise, low-dropout, linear regulators with low ground pin current. Its new DMOS topology provides significant improvement over previous designs, including low-dropout voltage (only 115mV typ at full load), and better transient performance. In addition, no output capacitor is required for stability, unlike conventional low-dropout regulators that are difficult to compensate and require expensive low ESR capacitors greater than 1µF.

Typical ground pin current is only 1mA (at IOUT = 500mA) and drops to 0.5µA in not enabled mode. Unlike regulators with PNP pass devices, quiescent current remains relatively constant over load variations and under dropout conditions.

View All Description in Datasheet

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusReplaced ByPrice | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsFootprintsSamples
REG103FA-2.7OBSOLETEREG104FA-AKTTT DDPAK/TO-263 (KTT) | 5 View   Download CAD Format for this Symbol Replaced by REG104FA-AKTTT
REG103FA-2.7KTTTNRNDREG104FA-AKTTT6.25 | 1kuDDPAK/TO-263 (KTT) | 5 View 50 | SMALL T&R Download CAD Format for this Symbol Replaced by REG104FA-AKTTT
REG103FA-2.7KTTTG3NRND 6.25 | 1kuDDPAK/TO-263 (KTT) | 5 View 50 | SMALL T&R Download CAD Format for this Symbol Not Available
REG103GA-2.7NRNDREG104GA-A6.25 | 1kuSOT-223 (DCQ) | 6 View 78 | TUBE Download CAD Format for this Symbol Replaced by REG104GA-A
REG103GA-2.7G4NRND 6.25 | 1kuSOT-223 (DCQ) | 6 View 78 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintNot Available
REG103UA-2.7NRNDREG104GA-A6.25 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintReplaced by REG104GA-A
REG103UA-2.7G4NRND 6.25 | 1kuSOIC (D) | 8 View 75 | TUBE Download CAD Format for this Symbol Download CAD Format for this FootprintNot Available

* 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 11:35 AM GMT, 20 Nov 2009
RegionCompanyIn StockPurchase
Call**REG103FA-2.7
AmericasRochester Electronics >1k
WorldwideDigiKey 46
TI Lead Time*: 20 WeeksREG103FA-2.7KTTT
AmericasRochester Electronics >1k
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksREG103FA-2.7KTTTG3
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksREG103GA-2.7
AmericasAvnet 78
Rochester Electronics >1k
WorldwideDigiKey >1k
TI Lead Time*: 20 WeeksREG103GA-2.7G4
AmericasAvnet 70
WorldwideDigiKey  Available
TI Lead Time*: 20 WeeksREG103UA-2.7
AmericasRochester Electronics >1k
WorldwideDigiKey 181
TI Lead Time*: 20 WeeksREG103UA-2.7G4
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
REG103FA-2.7KTTT  Green (RoHS & no Sb/Br) CU SN Level-2-260C-1 YEARViewView
REG103FA-2.7KTTTG3  Green (RoHS & no Sb/Br) CU SN Level-2-260C-1 YEARViewView
REG103GA-2.7  Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
REG103GA-2.7G4  Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
REG103UA-2.7  Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView
REG103UA-2.7G4  Green (RoHS & no Sb/Br) CU NIPDAU Level-1-260C-UNLIMViewView

* 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 REG103-27 Help

Datasheet

Application Notes

View Application Notes for Single Channel LDO

User Guides

View User Guides for Single Channel LDO

More Literature

View More Literature for Single Channel LDO

Tools & Software

NamePart # Company Tool / Software Type
DEM-SOT223LDO Compatible with Most Positive Output LDOs in SOT223 (DCQ) PackageDEM-SOT223LDOTexas InstrumentsDevelopment Boards/EVMs
SOT23 LDO, 5 V to 1.0 V, 100mA output power supplyTPS76933EVM-127Texas InstrumentsDevelopment Boards/EVMs
SOT23 LDO, 5 V to 1.8 V, 100mA output power supplyTPS76901EVM-127Texas InstrumentsDevelopment Boards/EVMs
SOT23 LDO, 5 V to 3.3 V, 100mA output power supplyTPS76918EVM-127Texas InstrumentsDevelopment Boards/EVMs
TPS76xxxEVM-125 Universal SOT-23 LDO Evaluation ModuleTPS76XXXEVM-125Texas InstrumentsDevelopment Boards/EVMs
TPS79301 Evaluation ModuleTPS79301EVMTexas InstrumentsDevelopment Boards/EVMs
TPS79328 Evaluation ModuleTPS79328EVMTexas InstrumentsDevelopment Boards/EVMs

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