TPS51117 Status: ACTIVE

1.8V to 28V Input Sync. Step Down Controller with DCAP™ Mode, Optimized for Light Load Efficiency

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Datasheet

Single Synchronous Step-Down Controller (Rev. B) (PDF 952 KB)
23 Sep 2009

	TPS51117	TPS51217	TPS51218	TPS51513
Topology	Buck,D-CAP™ Mode	Buck,D-CAP™ Mode	Buck,D-CAP™ Mode	Buck,D-CAP+™ Mode
Vin(Min)(V)	1.8	3	3	3
Vin(Max)(V)	28	28	28	28
Vout(Min)(V)	0.76	0.6	0.7	0.7
Vout(Max)(V)	5.5	2.6	2.6	1.05
Regulated Outputs(#)	1	1	1	1
Iout(Max)(A)	10	20	20	25
Switching Frequency(Max)(kHz)	550	340	430	500
Pin/Package	14QFN, 14TSSOP	10SON	10SON	32QFN
Thermal Shutdown	Yes	Yes	Yes	Yes
Rating	Catalog	Catalog	Catalog	Catalog
Duty Cycle(Max)(%)	95	89	91	90
	Samples	Samples	Samples	Samples
	Inventory	Inventory	Inventory	Inventory

Customers Who Evaluated This Product Also Evaluated

TPS51116: DDR1, DDR2, DDR3 Switcher and LDO
TPS51125: Dual-Synchronous, Step-Down Controller with Out-of-AudioT Operation and 100-mA LDOs
TPS51124: Dual, Synchronous Step Down Controller for Low Voltage System Power
TPS61085: 18.5V, 2A, 650kHz, 1.2MHz Step-Up DC-DC Converter with Forced PWM Mode
TPS65053: 5-Channel Power Mgmt IC with two step down converters and 3 low-input voltage LDOs
TPS61161: White LED Driver with Digital and PWM Brightness Control in 2mm x 2mm QFN Package

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Product Information

Features

High Efficiency, Low Power Consumption, 4.5-µA Typical Shutdown Current
Fixed Frequency Emulated On-Time Control, Adjustable from 100 kHz to 550 kHz
D-CAP™ Mode with 100-ns Load Step Response
< 1% Initial Reference Accuracy
Output Voltage Range: 0.75 V to 5.5 V
Wide Input Voltage Range: 1.8 V to 28 V
Selectable Auto-Skip/PWM-Only Operation
Temperature Compensated (4500 ppm/°C) Low-Side R_DS(on) Overcurrent Sensing
Negative Overcurrent Limit
Integrated Boost Diode
Integrated OVP/UVP and Thermal Shutdown
Power-Good Signal
Internal 1.2-ms Voltage Softstart
Integrated Output Discharge (Softstop)
APPLICATIONS
- Notebook Computers
- I/O Supplies
- System Power Supplies

D-CAP is a trademark of Texas Instruments.

Description

The TPS51117 is a cost effective, synchronous buck controller for POL voltage regulation in notebook PC applications. The controller is dedicated for Adaptive On-Time D-CAP Mode operation that provides ease of use, low external component count, and fast transient response. Auto-skip mode for high efficiency down to the milli-ampere load range, or PWM-only mode for low noise operation is selectable.

The current sensing scheme for positive overcurrent and negative overcurrent protection is loss-less low-side R_DS(on) sensing plus temperature compensation. The device receives a 5-V (4.5 V to 5.5 V) supply from another regulator such as the TPS51120 or TPS51020. The conversion input can be either VBAT or a 5-V rail, ranging from 1.

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
TPS51117PW	ACTIVE	-40 to 85	1.35 \| 1ku	TSSOP (PW) \| 14	View	90 \| TUBE
TPS51117PWG4	ACTIVE	-40 to 85	1.35 \| 1ku	TSSOP (PW) \| 14	View	90 \| TUBE
TPS51117PWR	ACTIVE	-40 to 85	1.20 \| 1ku	TSSOP (PW) \| 14	View	2000 \| LARGE T&R	Purchase Samples
TPS51117PWRG4	ACTIVE	-40 to 85	1.20 \| 1ku	TSSOP (PW) \| 14	View	2000 \| LARGE T&R	Purchase Samples
TPS51117RGYR	ACTIVE	-40 to 85	1.20 \| 1ku	QFN (RGY) \| 14	View	3000 \| LARGE T&R
TPS51117RGYRG4	ACTIVE	-40 to 85	1.20 \| 1ku	QFN (RGY) \| 14	View	3000 \| LARGE T&R
TPS51117RGYT	ACTIVE	-40 to 85	1.20 \| 1ku	QFN (RGY) \| 14	View	250 \| SMALL T&R		Purchase Samples
TPS51117RGYTG4	ACTIVE	-40 to 85	1.20 \| 1ku	QFN (RGY) \| 14	View	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

Reported Distributor Inventory as of 10:12 AM GMT, 22 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksTPS51117PW
Americas	Rochester Electronics	58
Worldwide	Mouser Electronics	2
TI Lead Time*: 20 WeeksTPS51117PWG4
Americas	Rochester Electronics	270
TI Lead Time*: 20 WeeksTPS51117PWR
None Reported View Distributors
TI Lead Time*: 20 WeeksTPS51117PWRG4
None Reported View Distributors
TI Lead Time*: 20 WeeksTPS51117RGYR
Asia	WPI	>1k
Worldwide	DigiKey	325
TI Lead Time*: 20 WeeksTPS51117RGYRG4
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksTPS51117RGYT
Americas	Avnet	250
Americas	Newark	150
Asia	Farnell Asia	150
Worldwide	DigiKey	Available
TI Lead Time*: 20 WeeksTPS51117RGYTG4
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
TPS51117PW	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS51117PWG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS51117PWR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS51117PWRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-1-260C-UNLIM	View	View
TPS51117RGYR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS51117RGYRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS51117RGYT	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS51117RGYTG4	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 TPS51117

Solution Guides

Notebook Computer Guide (Rev. A) (PDF, 2854 KB) 17244 views
30 Sep 2008

Tools & Software

Name	Part #	Company	Tool / Software Type
10A Evaluation Module Featuring the TPS51117 Synchronous Buck Controller with D-CAP Mode	TPS51117EVM	Texas Instruments	Development Boards/EVMs

Simulation Models

PSpice Model
- TPS51117 PSpice Transient Model (Rev. B) (ZIP, 111 KB) 187 views
  11 Sep 2008
TINA-TI Reference Design
- TPS51117 TINA-TI Transient Reference Design (Rev. C) (TSC, 403 KB) 129 views
  02 Mar 2009
TINA-TI Spice Model
- TPS51117 TINA-TI Transient Spice Model (Rev. A) (ZIP, 35 KB) 58 views
  02 Mar 2009

Customers Who Evaluated This Product Also Evaluated...
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TPS51117 Status: ACTIVE

1.8V to 28V Input Sync. Step Down Controller with DCAP™ Mode, Optimized for Light Load Efficiency

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Datasheet

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