TPS54231 Status: ACTIVE

2A, 28V Input, 570 kHz Step Down SWIFT™ DC/DC Converter with Eco-Mode ™

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Datasheet

2A, 28V INPUT, STEP DOWN SWIFT™ DC/DC CONVERTER WITH ECO-MODETM (PDF 815 KB)
07 Oct 2008

	TPS54231	TPS54232	TPS54233	TPS54331	TPS54332
Iout(Max)(A)	2	2	2	3	3.5
Vin(Min)(V)	3.5	3.5	3.5	3.5	3.5
Vin(Max)(V)	28	28	28	28	28
Vout(Min)(V)	0.8	0.8	0.8	0.8	0.8
Vout(Max)(V)	25	25	25	25	25
Iq(Typ)(mA)	0.11	0.11	0.11	0.11	0.11
Switching Frequency(Typ)(kHz)	570	1000	300	570	1000
Switch Current Limit(Typ)(A)	2.3	2.3	2.3
Topology	Buck	Buck	Buck	Buck	Buck
Operating Temp Range(Celsius)	-40 to 150	-40 to 150	-40 to 150	-40 to 150	-40 to 150
Pin/Package	8SOIC	8SOIC	8SOIC	8SOIC	8SO PowerPAD
Rating	Catalog	Catalog	Catalog	Catalog	Catalog
Duty Cycle(Max)(%)	90	90	90	90	90
Regulated Outputs(#)	1	1	1	1	1
Thermal Shutdown	Yes	Yes	Yes	Yes	yes
	Samples	Samples	Samples	Samples	Samples
	Inventory	Inventory	Inventory	Inventory	Inventory

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TPS54332: 3A, 28V Input, 1MHz Step Down SWIFT™ DC/DC Converter with Eco-mode™
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Product Information

Features

3.5V to 28V Input Voltage Range
Adjustable Output Voltage Down to 0.8V
Integrated 80 mΩ High Side MOSFET Supports up to 2A Continuous Output Current
High Efficiency at Light Loads with a Pulse Skipping Eco-mode
Fixed 570kHz Switching Frequency
Typical 1µA Shutdown Quiescent Current
Adjustable Slow Start Limits Inrush Currents
Programmable UVLO Threshold
Overvoltage Transient Protection
Cycle by Cycle Current Limit, Frequency Fold Back and Thermal Shutdown Protection
Available in Easy-to-Use SOIC8 Package
Supported by SwitcherPro Software Tool (http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)
For SWIFT Documentation, See the TI Website at www.ti.com/swift
APPLICATIONS
- Consumer Applications such as Set-Top Boxes, CPE Equipment, LCD Displays, Peripherals, and Battery Chargers
- Industrial and Car Audio Power Supplies
- 5V, 12V and 24V Distributed Power Systems

Description

The TPS54231 is a 28-V, 2-A non-synchronous buck converter that integrates a low R_DS(on) high side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode™ feature is automatically activated. Furthermore, the 1 µA shutdown supply current allows the device to be used in battery powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input under-voltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle by cycle current limit scheme, frequency fold back and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54231 is available in an 8-pin SOIC package that has been internally optimized to improve thermal performance.

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging			Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Top Side Marking	Package QTY \| Package Carrier	Samples
TPS54231D	ACTIVE	-40 to 150	1.40 \| 1ku	SOIC (D) \| 8	View	75 \| TUBE
TPS54231DG4	ACTIVE	-40 to 150	1.40 \| 1ku	SOIC (D) \| 8	View	75 \| TUBE
TPS54231DR	ACTIVE	-40 to 150	1.25 \| 1ku	SOIC (D) \| 8	View	2500 \| LARGE T&R
TPS54231DRG4	ACTIVE	-40 to 150	1.25 \| 1ku	SOIC (D) \| 8	View	2500 \| LARGE 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 10:04 AM GMT, 06 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksTPS54231D
Americas	Arrow	970
Asia	Farnell Asia	141
Europe	Arrow Southern Europe	225
Europe	Farnell	141
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksTPS54231DG4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksTPS54231DR
Worldwide	DigiKey	>1k
TI Lead Time*: 20 WeeksTPS54231DRG4
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
TPS54231D	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS54231DG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS54231DR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS54231DRG4	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 TPS54231

Tools & Software

*Required

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Input
		Min	Max
*	Vin Min:	3.5 V	28 V
*	Vin Max:	3.5 V	28 V

Output
		Min	Max
*	Vout:	0.8 V	25 V
*	Iout Max:	0.0 A	2 A

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To learn more about SwitcherPro™ visit www.ti.com/switcherpro

Name	Part #	Company	Tool / Software Type
TPS54231 28V Input, 3.3V Output, 2A Evaluation Module	TPS54231EVM-372	Texas Instruments	Development Boards/EVMs
SwitcherPro(TM) Online and Desktop Design Creator and Management Software	SWITCHERPRO	Texas Instruments	Application Software
SWIFT™ Converter Inverting Buck/Boost Calculator (Rev. A)(ZIP 504 KB ) 458 views 09 Oct 2009

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TPS54231 Status: ACTIVE

2A, 28V Input, 570 kHz Step Down SWIFT™ DC/DC Converter with Eco-Mode ™

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