TPS62354 Status: ACTIVE

1A, 3MHz Buck Converter with I2C for Dynamic Voltage Scaling

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Datasheet

800-mA 3-MHz Synchronous Step-Down Converter With I2C(TM) Compatible Interface (Rev. E) (tps62354.pdf, 1578 KB)
15 Apr 2008 Download

	TPS62350	TPS62351	TPS62352	TPS62353	TPS62354	TPS62355	TPS62356
Iout(Max)(A)	0.8	1	1	0.8	0.8	0.8	1
Vin(Min)(V)	2.7	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	5.5
Vout(Min)(V)	0.75	0.9	0.75	0.75	0.75	0.75	1.5
Vout(Max)(V)	1.5375	1.6875	1.4375	1.5375	1.5375	1.5375	1.975
Iq(Typ)(mA)	0.028	0.028	0.028	0.028	0.028	0.028	0.028
Switching Frequency(Max)(kHz)	3000	3000	3000	3000	3000	3000	3000
Switch Current Limit(Typ)(A)	1.35	1.35	1.35	1.35	1.35	1.35	1.35
Topology	Buck	Buck	Buck	Buck	Buck	Buck	Buck
Operating Temp Range(Celsius)	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Pin/Package	12DSBGA	10SON,12DSBGA	10SON,12DSBGA	12DSBGA	12DSBGA	10SON	12DSBGA
Rating	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog	Catalog
Duty Cycle(Max)(%)	80	80	80	80	80	80	80
Regulated Outputs(#)	1	1	1	1	1	1	1
	Samples	Samples	Samples	Samples	Samples	Samples	Samples
	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory	Inventory

Customers Who Evaluated This Product Also Evaluated

TPS62270: 2.25MHz 400mA Step-Down Converter with Selectable VOUT
TPS62355: 1A, 3MHz Buck Converter with I2C for Dynamic Voltage Scaling
TPS62352: 1A, 3MHz Buck Converter with I2C for Dynamic Voltage Scaling
TPS65020: 6-channel Power Mgmt IC with 3DC/DCs, 3 LDOs, I2C interface and Dynamic Voltage Scaling
TPS1120: Dual P-channel Enhancemenent-Mode MOSFET
TPS63001: 96% Buck-Boost Converter with 1.7A Current Switches, 3.3V fixed Output voltage in 3x3 QFN

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Product Information

Features

88% Efficiency at 3-MHz Operation
800-mA Output Current at V_I = 2.7 V
3-MHz Fixed Frequency Operation
Best in Class Load and Line Transient
Complete 1-mm Component Profile Solution
±2% PWM DC Voltage Accuracy
35-ns Minimum On-Time
Efficiency Optimized Power-Save Mode (Light PFM)
Transient Optimized Power-Save Mode (Fast PFM)
28-µA Typical Quiescent Current
I²C Compatible Interface up to 3.4 Mbps
Pin-Selectable Output Voltage
Synchronizable On the Fly to External Clock Signal
Available in a 10-Pin QFN (3 × 3 mm) and 12-Pin NanoFree™ (CSP) Packaging
APPLICATIONS
- SmartReflex™ Compliant Power Supply
- Split Supply DSPs and µP Solutions
  OMAP™, XSCALE™
- Cell Phones, Smart-Phones
- PDAs, Pocket PCs
- Digital Cameras
- Micro DC-DC Converter Modules

NanoFree, SmartReflex, OMAP, PowerPAD Is a trademark of Texas Instruments.
XSCALE is a trademark of Intel Corporation.
I2C is a trademark of Philips Corporation.

Description

The TPS6235x device is a high-frequency synchronous step-down dc-dc converter optimized for battery-powered portable applications. Intended for low-power applications, the TPS6235x supports up to 800-mA load current and allows the use of small, low cost inductors and capacitors.

The device is ideal for mobile phones and similar portable applications powered by a single-cell Li-Ion battery. With an output voltage range adjustable via I²C interface down to 0.6 V, the device supports low-voltage DSPs and processors core power supplies in smart-phones, PDAs, and handheld computers.

The TPS6235x operates at 3-MHz fixed switching frequency and enters the efficiency optimized power-save mode operation at light load currents to maintain high efficiency over the entire load current range. In the shutdown mode, the current consumption is reduced to less than 2 µA.

The serial interface is compatible with Fast/Standard and High-Speed mode I²C specification allowing transfers at up to 3.4 Mbps. This communication interface is used for dynamic voltage scaling with voltage steps down to 12.5 mV, for reprogramming the mode of operation (Light PFM, Fast PFM or Forced PWM) or disable/enabling the output voltage.

Pricing / Packaging / CAD Design Tools / Samples

			Price	Packaging		CAD Design Tools		Samples
Device	Status	Temp (^oC)	Price \| Quantity	Package \| Pins	Package QTY \| Package Carrier	Symbols	Footprints	Samples
TPS62354YZGR	ACTIVE	-40 to 85	1.95 \| 100u	DSBGA (YZG) \| 12	3000 \| LARGE T&R
TPS62354YZGT	ACTIVE	-40 to 85	2.15 \| 100u	DSBGA (YZG) \| 12	250 \| SMALL 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

	TI Inventory Status			Reported Distributor Inventory
TPS62354YZGR	As of 8:53 AM GMT, 30 Nov 2008			As of 8:53 AM GMT, 30 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*	>10k \| 8 Dec	4 Weeks	Americas	DigiKey	>1k
	0*		4 Weeks	Asia	WPI	>1k
TPS62354YZGT	As of 8:53 AM GMT, 30 Nov 2008			As of 8:53 AM GMT, 30 Nov 2008
	In Stock	In Progress QTY \| Date	Lead Time	Region	Company	In Stock	Purchase
	0*		20 Weeks	None Reported View Distributors
View all Distributors

* Our information is updated daily, so please check back with us soon if this does not meet your needs. You may also contact your TI Authorized Distributor , including those listed above, for real time stock information.

** 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
TPS62354YZGR	Green (RoHS & no Sb/Br)	SnAgCu	Level-1-260C-UNLIM	View	View
TPS62354YZGT	Green (RoHS & no Sb/Br)	SnAgCu	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

Datasheets

800-mA 3-MHz Synchronous Step-Down Converter With I2C(TM) Compatible Interface (Rev. E) (tps62354.pdf, 1578 KB)
15 Apr 2008 Download

Application Notes

Optimizing Transient Response of Internally Compensated DC-DC Converters (slva289.htm, 8 KB)
28 Jan 2008 Abstract
Using The TPS6235x Without The I2C Interface (slva277.htm, 8 KB)
17 May 2007 Abstract

View Application Notes for Step-Down Regulators

More Literature

View More Literature for Step-Down Regulators

Alternative Products - Are similar to TPS62354
Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Comments
TPS62270	2.25MHz 400mA Step-Down Converter with Selectable VOUT	TI customers also evaluated this product.
TPS62355	1A, 3MHz Buck Converter with I2C for Dynamic Voltage Scaling	TI customers also evaluated this product.
TPS62352	1A, 3MHz Buck Converter with I2C for Dynamic Voltage Scaling	TI customers also evaluated this product.
TPS62240	2.25MHz 300mA Step-Down Converter in 2x2mm SON/TSOT23 Package	TI customers also evaluated this product.

Complementary Products - Can be used with TPS62354
Customers Who Evaluated This Product Also Evaluated...
Part #	Name	Product Family	Comments
TPS65020	6-channel Power Mgmt IC with 3DC/DCs, 3 LDOs, I2C interface and Dynamic Voltage Scaling	POWER MANAGEMENT MULTI-CHANNEL IC (PMIC) SOLUTIONS-PMIC SOLUTIONS WITH AND WITHOUT BATTERY CHARGER	TI customers also evaluated this product.
TPS1120	Dual P-channel Enhancemenent-Mode MOSFET	POWER SUPPLY SUPPORT-PMOS SWITCHES	TI customers also evaluated this product.
TPS63001	96% Buck-Boost Converter with 1.7A Current Switches, 3.3V fixed Output voltage in 3x3 QFN	DC/DC CONVERTERS (INTEGRATED SWITCH)-BUCK-BOOST REGULATORS	TI customers also evaluated this product.

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