TPS79425 Status: ACTIVE

Single Output LDO, 250mA, Fixed(2.5V), High PSRR, Low Noise

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Datasheet

Ultralow-Noise, High-PSRR, Fast, RF, 250-mA Low-Dropout Linear Regulators (Rev. E) (PDF 781 KB)
03 Jan 2006

	TPS79401	TPS79418	TPS79425	TPS79428	TPS79430	TPS79433
Iout(Max)(A)	0.25	0.25	0.25	0.25	0.25	0.25
Vdo(Typ)(mV)	145	145	145	155	155	145
Iq(Typ)(mA)	0.172	0.172	0.172	0.172	0.172	0.172
Vin(Min)(V)	2.7	2.7	2.7	2.7	2.7	2.7
Vin(Max)(V)	5.5	5.5	5.5	5.5	5.5	5.5
Vout(Min)(V)		1.8	2.5	2.8	3	3.3
Vout(Max)(V)		1.8	2.5	2.8	3	3.3
Vout Adj(Min)(V)	1.22
Vout Adj(Max)(V)	5.5
Accuracy(%)	3	3	3	3	3	3
Output Capacitor(uF)	2.2	2.2	2.2	2.2	2.2	2.2
Output Capacitor Type	Ceramic	Ceramic	Ceramic	Ceramic	Ceramic	Ceramic
Fixed Output Options(V)		1.8	2.5	2.8	3	3.3
Pin/Package	6SOT-223, 8MSOP-PowerPAD	6SOT-223, 8MSOP-PowerPAD	6SOT-223, 8MSOP-PowerPAD	6SOT-223, 8MSOP-PowerPAD	6SOT-223, 8MSOP-PowerPAD	6SOT-223, 8MSOP-PowerPAD
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
Regulated Outputs(#)	1	1	1	1	1	1
	Samples	Samples	Samples	Samples	Samples	Samples
	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory

Customers Who Evaluated This Product Also Evaluated

TPS73501: Single Output LDO, 500mA, Adjustable, Low Quiescent Current, Low Noise, High PSRR

Product Information

Features

250-mA Low-Dropout Regulator With Enable
Available in Fixed and Adjustable (1.2 V to
5.5 V) Versions
High PSRR (60 dB at 10 kHz)
Ultralow Noise (32 µVrms, TPS79428)
Fast Start-Up Time (50 µs)
Stable With a 2.2-µF Ceramic Capacitor
Excellent Load/Line Transient Response
Very Low Dropout Voltage (155 mV at Full Load)
Available in MSOP-8 and SOT223-6 Packages
APPLICATIONS
- RF: VCOs, Receivers, ADCs
- Audio
- Bluetooth™, Wireless LAN
- Cellular and Cordless Telephones
- Handheld Organizers, PDAs

PowerPAD is a trademark of Texas Instruments.
Bluetooth is a trademark of Bluetooth SIG, Inc.
All trademarks are the property of their respective owners.

Description

The TPS794xx family of low-dropout (LDO) linear voltage regulators features high power-supply rejection ratio (PSRR), ultralow-noise, fast start-up, and excellent line and load transient responses in small outline, MSOP-8 PowerPAD™ and SOT223-6 packages. Each device in the family is stable with a small 2.2-µF ceramic capacitor on the output. The family uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (for example, 155 mV at 250 mA). Each device achieves fast start-up times (approximately 50 µs with a 0.001-µF bypass capacitor) while consuming low quiescent current (170 µA typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than µA.

View All Description in Datasheet

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			CAD Design Tools		Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Symbols	Footprints	Samples
TPS79425DCQ	ACTIVE	-40 to 85	0.70 \| 1ku	SOT-223 (DCQ) \| 6	View	78 \| TUBE		Purchase Samples
TPS79425DCQG4	ACTIVE	-40 to 85	0.70 \| 1ku	SOT-223 (DCQ) \| 6	View	78 \| TUBE	Purchase Samples
TPS79425DCQR	ACTIVE	-40 to 85	0.65 \| 1ku	SOT-223 (DCQ) \| 6	View	2500 \| LARGE T&R
TPS79425DCQRG4	ACTIVE	-40 to 85	0.65 \| 1ku	SOT-223 (DCQ) \| 6	View	2500 \| LARGE T&R
TPS79425DGNR	ACTIVE	-40 to 85	0.65 \| 1ku	MSOP-PowerPAD (DGN) \| 8	View	2500 \| LARGE T&R		Purchase Samples
TPS79425DGNRG4	ACTIVE	-40 to 85	0.65 \| 1ku	MSOP-PowerPAD (DGN) \| 8	View	2500 \| LARGE T&R		Purchase Samples
TPS79425DGNT	ACTIVE	-40 to 85	0.70 \| 1ku	MSOP-PowerPAD (DGN) \| 8	View	250 \| SMALL T&R
TPS79425DGNTG4	ACTIVE	-40 to 85	0.70 \| 1ku	MSOP-PowerPAD (DGN) \| 8	View	250 \| SMALL T&R

* 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 10:00 AM GMT, 20 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 14 WeeksTPS79425DCQ
Americas	Arrow	48
	Avnet	30
	Rochester Electronics	>1k
Europe	Abacus Polar	390
	Arrow Southern Europe	156
	Avnet-SILICA	28
	EBV Elektronik	234
	Spoerle	234
Worldwide	DigiKey	Available
Worldwide	Mouser Electronics	53
TI Lead Time*: 14 WeeksTPS79425DCQG4
Europe	EBV Elektronik	156
Worldwide	DigiKey	Available
TI Lead Time*: 14 WeeksTPS79425DCQR
Americas	Rochester Electronics	>1k
Asia	WPI	>1k
Worldwide	DigiKey	>1k
TI Lead Time*: 14 WeeksTPS79425DCQRG4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksTPS79425DGNR
Americas	Arrow	>1k
Americas	Rochester Electronics	>1k
Asia	WPI	>1k
Worldwide	DigiKey	629
TI Lead Time*: 20 WeeksTPS79425DGNRG4
Worldwide	DigiKey	Available
TI Lead Time*: 14 WeeksTPS79425DGNT
Americas	Avnet	1k
Americas	Rochester Electronics	500
Asia	Farnell Asia	616
Asia	WPI	175
Europe	Arrow Northern Europe	29
	Avnet-SILICA	>1k
	Farnell	616
Worldwide	DigiKey	564
Worldwide	Mouser Electronics	202
TI Lead Time*: 14 WeeksTPS79425DGNTG4
Americas	Rochester Electronics	1k
Europe	EBV Elektronik	>1k
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
TPS79425DCQ	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS79425DCQG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS79425DCQR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS79425DCQRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS79425DGNR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS79425DGNRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS79425DGNT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS79425DGNTG4	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 TPS79425

Datasheet

Ultralow-Noise, High-PSRR, Fast, RF, 250-mA Low-Dropout Linear Regulators (Rev. E) (PDF, 781 KB)
03 Jan 2006

Application Notes

Using 3.3-V Signals for Spartan-3 Configuration and JTAG Ports (Rev. A) (HTM, 8 KB) 2096 views
13 Apr 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
PowerPAD Thermally Enhanced Package Application Report (Rev. D) (HTM, 9 KB) 27227 views
16 Oct 2008 Read Abstract

View Application Notes for Single Channel LDO

User Guides

DEM-SOT223LDO DEMONSTRATION FIXTURE (PDF, 73 KB) 1985 views
15 Oct 2003

View User Guides for Single Channel LDO

Reference Designs

Description	Part #	Company
Power Management Solution for Spartan(TM)-3 (Design 1)	PR213	Texas Instruments
Power Management Solution for Spartan(TM)-3 (Design 3)	PR215	Texas Instruments
Power Management Solution for Spartan(TM)-3 (Design 4)	PR216	Texas Instruments
Power Management Solution for Virtex(TM)-II (Design 2)	PR219	Texas Instruments
Power Management Solution for Virtex-II Pro(TM)-(Design 2)	PR220	Texas Instruments
Power Management Solution for Virtex-II Pro(TM)-(Design 3 w/ Sequential Sequencing)	PR222	Texas Instruments
Power Management Solution for Virtex-II Pro(TM)-(Design 5)	PR226	Texas Instruments
Power Management Solution for Virtex-II(TM)-(Design 5)	PR225	Texas Instruments

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
XILINXPWR-079 Power Management Evaluation Module for Xilinx FPGAs	XILINXPWR-079	Texas Instruments	Development Boards/EVMs

Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
TPS73501	Single Output LDO, 500mA, Adjustable, Low Quiescent Current, Low Noise, High PSRR	LINEAR REGULATORS-SINGLE CHANNEL LDO	TI customers also evaluated this product.

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TPS79425 Status: ACTIVE

Single Output LDO, 250mA, Fixed(2.5V), High PSRR, Low Noise

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