Datasheet Texas Instruments REG103UA-3

500mA, Low-Noise, Low Dropout Regulator 8-SOIC -40 to 85

Datasheets

PDF, 1.1 Mb, Revision: D, File published: Sep 22, 2005

Extract from the document

Lifecycle Status	NRND (Not recommended for new designs)
Manufacture's Sample Availability	No

Replacement	REG102UA-3
Replacement Code	S

Accuracy	2 %
Fixed Output Options	2.5,3,3.3,5 V
Iout(Max)	0.5 A
Iq(Typ)	1 mA
Noise	33 uVrms
Operating Temperature Range	-40 to 85 C
Output Capacitor Type	Cap Free,Ceramic
Output Options	Adjustable Output,Fixed Output
PSRR @ 100KHz	20 dB
Package Group	SOIC
Package Size: mm2:W x L	8SOIC: 29 mm2: 6 x 4.9(SOIC) PKG
Rating	Catalog
Regulated Outputs	1
Special Features	Enable,Power Good
Thermal Resistance ОёJA	150 В°C/W
Vdo(Typ)	115 mV
Vin(Max)	15 V
Vin(Min)	2.7 V
Vout(Max)	5.5 V
Vout(Min)	1.3 V

RoHS

Compliant

Evaluation Modules & Boards: TPS79328EVM
TPS79328 Evaluation Module
Lifecycle Status: Active (Recommended for new designs)
- Download
Evaluation Modules & Boards: TPS76933EVM-127
SOT23 LDO, 5 V to 1.0 V, 100mA output power supply
Lifecycle Status: Active (Recommended for new designs)
- Download
Evaluation Modules & Boards: DEM-SOT223LDO
DEM-SOT223LDO Compatible with Most Positive Output LDOs in SOT223 (DCQ) Package
Lifecycle Status: Active (Recommended for new designs)
- Download
Evaluation Modules & Boards: TPS76901EVM-127
SOT23 LDO, 5 V to 1.8 V, 100mA output power supply
Lifecycle Status: Active (Recommended for new designs)
- Download
Evaluation Modules & Boards: TPS79301EVM
TPS79301 Evaluation Module
Lifecycle Status: Active (Recommended for new designs)
- Download

Download
LDO Noise Demystified (Rev. A)
PDF, 785 Kb, Revision: A, File published: Aug 9, 2017
Thisapplicationreportexplainsthe differencebetweennoiseand PSRRof an LDO.It also explainsthedifferentwaysnoiseis specifiedin LDOdatasheetsandwhichspecificationshouldbe usedin theapplication.Finallyit explainshow LDOnoiseis reduced.
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LDO PSRR Measurement Simplified (Rev. A)
PDF, 131 Kb, Revision: A, File published: Aug 9, 2017
This applicationreportexplainsdifferentmethodsof measuringthe PowerSupplyRejectionRatio(PSRR)of a Low-Dropout(LDO)regulatorand includesthe prosand consof thesemeasuringmethods
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Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs
PDF, 130 Kb, File published: Sep 19, 2011
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Packaging Limits Range of Linear Regulators
PDF, 75 Kb, File published: May 8, 2010
The power limitations of the physical packaging for a linear regulator device can limit the total output current or the input-to-output voltage differential. This inherent limitation is not always apparent from the product data sheet and must be evaluated during the design phase. This application note shows how the package can limit the operating envelope of a linear regulator.

Series: REG103 (49)

REG103UA3, REG103UA 3