REG102-28 Status: ACTIVE

Single Output LDO, 250mA, Fixed(2.8V), Low Noise, Fast Transient Response

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Datasheet

DMOS 250mA Low-Dropout Regulator (Rev. F) (PDF 695 KB)
08 Sep 2005

	REG102-25	REG102-28	REG102-285	REG102-3	REG102-33	REG102-5	REG102-A
Iout(Max)(A)	0.25	0.25	0.25	0.25	0.25	0.25	0.25
Vdo(Typ)(mV)	150	150	150	150	150	150	150
Iq(Typ)(mA)	0.4	0.4	0.4	0.4	0.4	0.4	0.4
Vin(Min)(V)	1.8	1.8	1.8	1.8	2.1	1.8	1.8
Vin(Max)(V)	10	10	12	12	12	12	12
Vout(Min)(V)	2.5	2.8	2.85	3	3.3	5
Vout(Max)(V)	2.5	2.8	2.85	3	3.3	5
Vout Adj(Min)(V)							2.5
Vout Adj(Max)(V)							5.5
Accuracy(%)	1.5	1.5	1.5	1.5	1.5	1.5	1.5
Output Capacitor Type	Capacitor Free	Capacitor Free	Capacitor Free	Capacitor Free	Capacitor Free	Capacitor Free	Capacitor Free
Fixed Output Options(V)	2.5	2.8	2.85	3	3.3	5
Pin/Package	5SOT-23, 6SOT-223, 8SOIC	5SOT-23, 6SOT-223	5SOT-23, 6SOT-223, 8SOIC	5SOT-23, 6SOT-223, 8SOIC	5SOT-23, 6SOT-223, 8SOIC	5SOT-23, 6SOT-223, 8SOIC	5SOT-23, 6SOT-223, 8SOIC
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
Regulated Outputs(#)	1	1	1	1	1	1	1
	Samples	Samples	Samples	Samples	Samples	Samples	Samples
	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory

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Product Information

Features

NEW DMOS TOPOLOGY:
   Ultra Low Dropout Voltage:
     150mV typ at 250mA
     Output capacitor not Required for Stability
FAST TRANSIENT RESPONSE
VERY LOW NOISE: 28 µVrms
HIGH ACCURACY: ±1.5% max
HIGH EFFICIENCY:
I_GND = 600 µA at I_OUT = 250mA
Not Enabled: I_GND = 0.01 µA
2.5V, 2.8V, 2.85V, 3.0V, 3.3V, 5.0V AND ADJUSTABLE OUTPUT VERSIONS
OTHER OUTPUT VOLTAGES AVAILABLE UPON REQUEST
FOLDBACK CURRENT LIMIT
THERMAL PROTECTION
SMALL SURFACE-MOUNT PACKAGES:
SOT23-5, SOT223-5, and 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 REG102 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 150mV 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 600µA (at I_OUT = 250mA) and drops to 10nA when not enabled. Unlike regulators with PNP pass devices, quiescent current remains relatively constant over load variations and under dropout conditions.

The REG102 has very low output noise (typically 28µVrms for V_OUT = 3.

View All Description in Datasheet

Pricing / Packaging / CAD Design Tools / Samples

		Price	Packaging			CAD Design Tools		Samples
Device	Status	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
REG102GA-2.8	ACTIVE	1.25 \| 1ku	SOT-223 (DCQ) \| 6	View	78 \| TUBE
REG102GA-2.8G4	ACTIVE	1.25 \| 1ku	SOT-223 (DCQ) \| 6	View	78 \| TUBE	Contact TI Distributor or Sales Office
REG102NA-2.8/250	ACTIVE	1.20 \| 1ku	SOT-23 (DBV) \| 5	View	250 \| SMALL T&R
REG102NA-2.8/250G4	ACTIVE	1.20 \| 1ku	SOT-23 (DBV) \| 5	View	250 \| SMALL T&R	Contact TI Distributor or Sales Office

* 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 11:36 AM GMT, 20 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksREG102GA-2.8
Americas	Rochester Electronics	>1k
Worldwide	DigiKey	373
TI Lead Time*: 20 WeeksREG102GA-2.8G4
Worldwide	DigiKey	Available
TI Lead Time*: 14 WeeksREG102NA-2.8/250
Americas	Newark	260
Americas	Rochester Electronics	>1k
Asia	Farnell Asia	277
Worldwide	DigiKey	200
Worldwide	Mouser Electronics	27
TI Lead Time*: 14 WeeksREG102NA-2.8/250G4
Worldwide	DigiKey	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 Content				DPPM / MTBF / FIT Rate
Device	Eco Plan*	Lead / Ball Finish	MSL Rating / Peak Reflow	Details	Details
REG102GA-2.8	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
REG102GA-2.8G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
REG102NA-2.8/250	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
REG102NA-2.8/250G4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View

* 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 REG102-28

Datasheet

DMOS 250mA Low-Dropout Regulator (Rev. F) (PDF, 695 KB)
08 Sep 2005

Application Notes

Thermal and Electrical Properties of Selected Packaging Materials (HTM, 8 KB) 15987 views
04 Oct 2000 Read Abstract
Shelf-Life Evaluation of Lead-Free Component Finishes (HTM, 8 KB) 27183 views
24 May 2004 Read Abstract
LDO PSRR Measurement Simplified (HTM, 8 KB) 1122 views
27 Jul 2009 Read Abstract
LDO Noise Demystified (HTM, 8 KB) 1112 views
30 Jun 2009 Read Abstract

View Application Notes for Single Channel LDO

User Guides

DEM-SOT23LDO DEMONSTRATION FIXTURE (Rev. A) (PDF, 106 KB) 1538 views
02 Jun 2005
DEM-SOT223LDO DEMONSTRATION FIXTURE (PDF, 73 KB) 1985 views
15 Oct 2003

View User Guides for Single Channel LDO

More Literature

DMOS Delivers Dramatic Performance Gains to LDO Regulators (EDN mag) (PDF, 137 KB) 916 views
14 Feb 2001

View More Literature for Single Channel LDO

Tools & Software

Name	Part #	Company	Tool / Software Type
DEM-SOT223LDO Compatible with Most Positive Output LDOs in SOT223 (DCQ) Package	DEM-SOT223LDO	Texas Instruments	Development Boards/EVMs
SOT23 LDO, 5 V to 1.0 V, 100mA output power supply	TPS76933EVM-127	Texas Instruments	Development Boards/EVMs
SOT23 LDO, 5 V to 1.8 V, 100mA output power supply	TPS76901EVM-127	Texas Instruments	Development Boards/EVMs
SOT23 LDO, 5 V to 3.3 V, 100mA output power supply	TPS76918EVM-127	Texas Instruments	Development Boards/EVMs
TPS76xxxEVM-125 Universal SOT-23 LDO Evaluation Module	TPS76XXXEVM-125	Texas Instruments	Development Boards/EVMs
TPS79301 Evaluation Module	TPS79301EVM	Texas Instruments	Development Boards/EVMs
TPS79328 Evaluation Module	TPS79328EVM	Texas Instruments	Development Boards/EVMs

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REG102-28 Status: ACTIVE

Single Output LDO, 250mA, Fixed(2.8V), Low Noise, Fast Transient Response

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