TPS5431 Status: ACTIVE

5.5-V to 23-V, 3-A Step-Down SWIFT™ Converter

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Datasheet

3-A Wide Input Range Step-Down Swift(TM) Converter (Rev. C) (PDF 951 KB)
22 Nov 2006

	TPS5431
Iout(Max)(A)	3
Vin(Min)(V)	5.5
Vin(Max)(V)	23
Vout(Min)(V)	1.23
Vout(Max)(V)	20
Iq(Typ)(mA)	3
Switching Frequency(Typ)(kHz)	500
Switch Current Limit(Typ)(A)	4
Topology	Buck
Operating Temp Range(Celsius)	-40 to 125
Pin/Package	8SO PowerPAD
Rating	Catalog
Duty Cycle(Max)(%)	87
Regulated Outputs(#)	1
Thermal Shutdown	Yes
	Samples
	Inventory

Customers Who Evaluated This Product Also Evaluated

TPS5430: 5.5V to 36V, 3A, 500kHz Step Down SWIFT™ Converter
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TPS54310: 3V to 6V, 3A Synchronous Step Down SWIFT™ Converter
REG1117: Single Output LDO, 800mA, Adj.(1.25 to 13.5V), Internal Current limit, Thermal Overload Protection
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TPS79328: Single Output LDO, 200mA, Fixed(2.8V), High PSRR, Low Noise

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Product Information

Features

Wide Input Voltage Range:
- TPS5430: 5.5 V to 36 V
- TPS5431: 5.5 V to 23 V
Up to 3-A Continuous (4-A Peak) Output Current
High Efficiency up to 95% Enabled by 110-m Integrated MOSFET Switch
Wide Output Voltage Range: Adjustable Down to 1.22 V with 1.5% Initial Accuracy
Internal Compensation Minimizes External Parts Count
Fixed 500 kHz Switching Frequency for Small Filter Size
Improved Line Regulation and Transient Response by Input Voltage Feed Forward
System Protected by Overcurrent Limiting, Overvoltage Protection and Thermal Shutdown
-40°C to 125°C Operating Junction Temperature Range
Available in Small Thermally Enhanced 8-Pin SOIC PowerPAD Package
For SWIFT™ Documentation, Application Notes and Design Software, See the TI Website at www.ti.com/swift
APPLICATIONS
- Consumer: Set-top Box, DVD, LCD Displays
- Industrial and Car Audio Power Supplies
- Battery Chargers, High Power LED Supply
- 12-V/24-V Distributed Power Systems

SWIFT, PowerPAD are trademarks of Texas Instruments.

Description

As a member of the SWIFT™ family of DC/DC regulators, the TPS5430/TPS5431 is a high-output-current PWM converter that integrates a low resistance high side N-channel MOSFET. Included on the substrate with the listed features are a high performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5 V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 18 µA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS5430/TPS5431 feedback loop is internally compensated. The TPS5431 is intended to operate from power rails up to 23 V. The TPS5430 regulates a wide variety of power sources including 24-V bus.

The TPS5430/TPS5431 device is available in a thermally enhanced, easy to use 8-pin SOIC PowerPAD™ package. TI provides evaluation modules and the SWIFT™ Designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.

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	Samples
TPS5431DDA	ACTIVE	-40 to 125	1.95 \| 1ku	SO PowerPAD (DDA) \| 8	View	75 \| TUBE
TPS5431DDAG4	ACTIVE	-40 to 125	1.95 \| 1ku	SO PowerPAD (DDA) \| 8	View	75 \| TUBE
TPS5431DDAR	ACTIVE	-40 to 125	1.75 \| 1ku	SO PowerPAD (DDA) \| 8	View	2500 \| LARGE T&R	Purchase Samples
TPS5431DDARG4	ACTIVE	-40 to 125	1.75 \| 1ku	SO PowerPAD (DDA) \| 8	View	2500 \| LARGE T&R	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 10:04 AM GMT, 06 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksTPS5431DDA
Worldwide	DigiKey	590
TI Lead Time*: 20 WeeksTPS5431DDAG4
Asia	Farnell Asia	7
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksTPS5431DDAR
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksTPS5431DDARG4
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
TPS5431DDA	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS5431DDAG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS5431DDAR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS5431DDARG4	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 TPS5431

Tools & Software

*Required

Design Now with SwitcherPro™

Enter your design parameters below to design now with SwitcherPro™

Input
		Min	Max
*	Vin Min:	5.5 V	23 V
*	Vin Max:	5.5 V	23 V

Output
		Min	Max
*	Vout:	1.23 V	20 V
*	Iout Max:	0.0 A	3 A

Search for more Power Management devices with Power Quick Search on power.ti.com
To learn more about SwitcherPro™ visit www.ti.com/switcherpro

Name	Part #	Company	Tool / Software Type
9V to 21Vin, 3A Step Down Converter	TPS5431EVM-173	Texas Instruments	Development Boards/EVMs
SwitcherPro(TM) Online and Desktop Design Creator and Management Software	SWITCHERPRO	Texas Instruments	Application Software
Gerber File for TPS54314EVM(ZIP 107 KB ) 172 views 30 Apr 2004
Gerber File for TPS54310EVM(ZIP 112 KB ) 280 views 30 Apr 2004

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TPS5431 Status: ACTIVE

5.5-V to 23-V, 3-A Step-Down SWIFT™ Converter

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