TPS54350 Status: ACTIVE

4.5 to 20V, 3A Synchronous Step Down SWIFT™ Converter

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Datasheet

4.5V to 20V Input, 3-A Output Synchronous PWM Switcher w/Integrated FET (SWIFT) (Rev. C) (PDF 928 KB)
28 Oct 2004

	TPS54350	TPS54550
Iout(Max)(A)	3	6
Vin(Min)(V)	4.5	4.5
Vin(Max)(V)	20	20
Vout(Min)(V)	0.9	0.9
Vout(Max)(V)	12	12
Iq(Typ)(mA)	5	9
Switching Frequency(Max)(kHz)	700	700
Switch Current Limit(Typ)(A)	3.3	7.5
Topology	Buck, Inverting Buck/Boost	Buck
Operating Temp Range(Celsius)	-40 to 150,-40 to 150)	-40 to 150
Pin/Package	16HTSSOP	16HTSSOP
Rating	Catalog	Catalog
Duty Cycle(Max)(%)	80	80
Regulated Outputs(#)	1	1
Thermal Shutdown	yes	yes
	Samples	Samples
	Inventory	Inventory

Other qualified versions of TPS54350

Version	Part Number	Definition
Enhanced Product	TPS54350-EP	Supports Defense, Aerospace and Medical Applications

Customers Who Evaluated This Product Also Evaluated

TPS54550: 4.5V to 20V, 6A Synchronous Step Down SWIFT™ Converter
TPS5430: 5.5V to 36V, 3A, 500kHz Step Down SWIFT™ Converter
TPS54325: 4.5V to 18V Input, 3A Synchronous Step Down SWIFT™ Converter with D-CAP2™ Mode
MC33063A: 1.5-A Peak Boost/Buck/Inverting Switching Regulator
MC34063A: 1.5-A Boost/Buck/Inverting Switching Regulator
TPS3809K33: 3-Pin Supply Voltage Supervisor

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Product Information

Features

100 m, 4.5-A Peak MOSFET Switch for High Efficiency at 3-A Continuous Output Current
Uses External Lowside MOSFET or Diode
Output Voltage Adjustable Down to 0.891 V With 1% Accuracy
Synchronizes to External Clock
180° Out of Phase Synchronization
Wide PWM Frequency – Fixed 250 kHz, 500 kHz or Adjustable 250 kHz to 700 kHz
Internal Slow Start
Load Protected by Peak Current Limit and Thermal Shutdown
Adjustable Undervoltage Lockout
16-Pin TSSOP PowerPAD™ Package
APPLICATIONS
- Industrial & Commercial Low Power Systems
- LCD Monitors and TVs
- Computer Peripherals
- Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors

PowerPAD and SWIFT are trademarks of Texas Instruments.

Description

The TPS54350 is a medium output current synchronous buck PWM converter with an integrated high side MOSFET and a gate driver for an optional low side external MOSFET. Features include a high performance voltage error amplifier that enables maximum performance under transient conditions and flexibility in choosing the output filter inductors and capacitors. The TPS54350 has an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 4.5 V; an internal slow-start circuit to limit in-rush currents; and a power good output to indicate valid output conditions. The synchronization feature is configurable as either an input or an output for easy 180° out of phase synchronization.

The TPS54350 device is available in a thermally enhanced 16-pin TSSOP (PWP) PowerPAD™ package.

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	Samples
TPS54350PWP	ACTIVE	-40 to 150	2.05 \| 1ku	HTSSOP (PWP) \| 16	View	90 \| TUBE
TPS54350PWPG4	ACTIVE	-40 to 150	2.05 \| 1ku	HTSSOP (PWP) \| 16	View	90 \| TUBE
TPS54350PWPR	ACTIVE	-40 to 150	1.85 \| 1ku	HTSSOP (PWP) \| 16	View	2000 \| LARGE T&R	Purchase Samples
TPS54350PWPRG4	ACTIVE	-40 to 150	1.85 \| 1ku	HTSSOP (PWP) \| 16	View	2000 \| 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 10:12 AM GMT, 20 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksTPS54350PWP
Europe	Compel	160
TI Lead Time*: 20 WeeksTPS54350PWPG4
Asia	Farnell Asia	17
Europe	Farnell	5
TI Lead Time*: 20 WeeksTPS54350PWPR
None Reported View Distributors
TI Lead Time*: 20 WeeksTPS54350PWPRG4
None Reported View Distributors
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
TPS54350PWP	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS54350PWPG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS54350PWPR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS54350PWPRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	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 TPS54350

Tools & Software

*Required

Design Now with SwitcherPro™

Enter your design parameters below to design now with SwitcherPro™

Input
		Min	Max
*	Vin Min:	4.5 V	20 V
*	Vin Max:	4.5 V	20 V

Output
		Min	Max
*	Vout:	0.9 V	12 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
3-A, 4.5 to 20Vin DC/DC Converter with Adjustable Output Voltage	TPS54350EVM-235	Texas Instruments	Development Boards/EVMs
SwitcherPro(TM) Online and Desktop Design Creator and Management Software	SWITCHERPRO	Texas Instruments	Application Software
Gerber File for TPS5435xEVM(ZIP 157 KB ) 252 views 30 Apr 2004
Gerber File for TPS54350EVM(ZIP 106 KB ) 184 views 30 Apr 2004

Part #	Name	Product Family	Comments
TPS54550	4.5V to 20V, 6A Synchronous Step Down SWIFT™ Converter	DC/DC CONVERTERS (INTEGRATED SWITCH) - STEP-DOWN REGULATORS	6A pin compatible version of the TPS54350
TPS5430	5.5V to 36V, 3A, 500kHz Step Down SWIFT™ Converter	DC/DC CONVERTERS (INTEGRATED SWITCH) - STEP-DOWN REGULATORS	A simple 5.5 to 36V input non-synchronous buck converter in 8HSOIC
TPS62110	Adjustable, 1.5-A, 17-V Vin Step-Down Converter in QFN-16	DC/DC CONVERTERS (INTEGRATED SWITCH) - STEP-DOWN REGULATORS	3.1 to 17V input 1.5A synchronous buck converter with two integrated MOSFET
TPS5420	5.5V to 36V, 2A, 500kHz Step Down SWIFT™ Converter	DC/DC CONVERTERS (INTEGRATED SWITCH) - STEP-DOWN REGULATORS	2A pin compatible version of the TPS5430
TPS40075	Wide Input Synchronous Buck Controller with Voltage Feed Forward	NON-ISOLATED SWITCHING DC/DC REGULATORS - DC/DC CONTROLLERS (EXTERNAL SWITCH)	4.5 to 28V DC/DC controller with external MOSFETs
Customers Who Evaluated This Product Also Evaluated...
TPS54550	4.5V to 20V, 6A Synchronous Step Down SWIFT™ Converter	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
TPS5430	5.5V to 36V, 3A, 500kHz Step Down SWIFT™ Converter	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
TPS54325	4.5V to 18V Input, 3A Synchronous Step Down SWIFT™ Converter with D-CAP2™ Mode	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
TPS54620	4.5V to 17V Input, 6A Synchronous Step Down SWIFT™ Converter	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
TPS62110	Adjustable, 1.5-A, 17-V Vin Step-Down Converter in QFN-16	DC/DC CONVERTERS (INTEGRATED SWITCH)-STEP-DOWN REGULATORS	TI customers also evaluated this product.
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TPS54350 Status: ACTIVE

4.5 to 20V, 3A Synchronous Step Down SWIFT™ Converter

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