TPS51116 Status: ACTIVE

DDR1, DDR2, DDR3 Switcher and LDO

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Datasheet

Complete DDR, DDR2 and DDR3 Memory Power Solution Synch Buck Controller (Rev. H) (PDF 1303 KB)
16 Jul 2009

	TPS51116
Topology	Buck,D-CAP™ Mode
Vin(Min)(V)	3
Vin(Max)(V)	28
Vout(Min)(V)	1.5
Vout(Max)(V)	3
Regulated Outputs(#)	1
Iout(Max)(A)	10
Switching Frequency(Max)(kHz)	400
Iq(Typ)(mA)	0.8
Pin/Package	20HTSSOP, 24VQFN
Thermal Shutdown	Yes
Rating	Catalog
Duty Cycle(Max)(%)	84
	Samples
	Inventory

Customers Who Evaluated This Product Also Evaluated

TPS51117: 1.8V to 28V Input Sync. Step Down Controller with DCAP™ Mode, Optimized for Light Load Efficiency
TPS51124: Dual, Synchronous Step Down Controller for Low Voltage System Power
TPS40055: Wide Input (8V-40V) up to 1MHz Frequency Synchronous Buck Controller, source/sink
TPS51200: Sink/Source DDR Termination Regulator
TPS51100: 3A Source/Sink DDR terminator Regulator
TL431A: Adjustable Precision Shunt Regulator

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Product Information

Features

Synchronous Buck Controller (VDDQ)
- Wide-Input Voltage Range: 3.0-V to 28-V
- D-CAP™ Mode with 100-ns Load Step Response
- Current Mode Option Supports Ceramic Output Capacitors
- Supports Soft-Off in S4/S5 States
- Current Sensing from R_DS(on) or Resistor
- 2.5-V (DDR), 1.8-V (DDR2), Adjustable to 1.5-V (DDR3) or Output Range 0.75-V to 3.0-V
- Equipped with Powergood, Overvoltage Protection and Undervoltage Protection
3-A LDO (VTT), Buffered Reference (VREF)
- Capable to Sink and Source 3 A
- LDO Input Available to Optimize Power Losses
- Requires only 20-µF Ceramic Output Capacitor
- Buffered Low Noise 10-mA VREF Output
- Accuracy ±20 mV for both VREF and VTT
- Supports High-Z in S3 and Soft-Off in S4/S5
- Thermal Shutdown
APPLICATIONS
- DDR/DDR2/DDR3/LPDDR3 Memory Power Supplies
- SSTL-2 SSTL-18 and HSTL Termination

Description

The TPS51116 provides a complete power supply for DDR/SSTL-2, DDR2/SSTL-18, and DDR3 memory systems. It integrates a synchronous buck controller with a 3-A sink/source tracking linear regulator and buffered low noise reference. The TPS51116 offers the lowest total solution cost in systems where space is at a premium. The TPS51116 synchronous controller runs fixed 400kHz pseudo-constant frequency PWM with an adaptive on-time control that can be configured in D-CAP Mode for ease of use and fastest transient response or in current mode to support ceramic output capacitors. The 3-A sink/source LDO maintains fast transient response only requiring 20-µF (2 × 10 µF) of ceramic output capacitance. In addition, the LDO supply input is available externally to significantly reduce the total power losses.

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
TPS51116PWP	ACTIVE	-40 to 85	1.35 \| 1ku	HTSSOP (PWP) \| 20	View	70 \| TUBE
TPS51116PWPG4	ACTIVE	-40 to 85	1.35 \| 1ku	HTSSOP (PWP) \| 20	View	70 \| TUBE
TPS51116PWPR	ACTIVE	-40 to 85	1.20 \| 1ku	HTSSOP (PWP) \| 20	View	2000 \| LARGE T&R	Purchase Samples
TPS51116PWPRG4	ACTIVE	-40 to 85	1.20 \| 1ku	HTSSOP (PWP) \| 20	View	2000 \| LARGE T&R	Purchase Samples
TPS51116RGER	ACTIVE	-40 to 85	1.20 \| 1ku	VQFN (RGE) \| 24	View	3000 \| LARGE T&R	Purchase Samples
TPS51116RGERG4	ACTIVE	-40 to 85	1.20 \| 1ku	VQFN (RGE) \| 24	View	3000 \| LARGE T&R	Purchase Samples
TPS51116RGET	ACTIVE	-40 to 85	1.35 \| 1ku	VQFN (RGE) \| 24	View	250 \| SMALL T&R
TPS51116RGETG4	ACTIVE	-40 to 85	1.35 \| 1ku	VQFN (RGE) \| 24	View	250 \| SMALL 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 10:14 AM GMT, 26 Nov 2009
Region	Company	In Stock	Purchase
TI Lead Time*: 20 WeeksTPS51116PWP
Americas	Arrow	688
	Avnet	250
Worldwide	Mouser Electronics	65
TI Lead Time*: 20 WeeksTPS51116PWPG4
Asia	Farnell Asia	27
TI Lead Time*: 20 WeeksTPS51116PWPR
None Reported View Distributors
TI Lead Time*: 20 WeeksTPS51116PWPRG4
None Reported View Distributors
TI Lead Time*: 20 WeeksTPS51116RGER
None Reported View Distributors
TI Lead Time*: 20 WeeksTPS51116RGERG4
None Reported View Distributors
TI Lead Time*: 16 WeeksTPS51116RGET
Americas	Newark	160
Europe	Avnet-SILICA	410
TI Lead Time*: 16 WeeksTPS51116RGETG4
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
TPS51116PWP	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS51116PWPG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS51116PWPR	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS51116PWPRG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS51116RGER	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS51116RGERG4	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS51116RGET	Green (RoHS & no Sb/Br)	CU NIPDAU	Level-2-260C-1 YEAR	View	View
TPS51116RGETG4	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 TPS51116

Datasheet

Complete DDR, DDR2 and DDR3 Memory Power Solution Synch Buck Controller (Rev. H) (PDF, 1303 KB)
16 Jul 2009

Application Notes

DDR2 Power Solutions for Notebooks (HTM, 8 KB) 1740 views
24 May 2004 Read Abstract
Cyclone™ III FPGA Starter Kit Power Reference Design (HTM, 8 KB) 2760 views
27 Mar 2008 Read Abstract
Intel ATOM Power Solutions (Rev. A) (HTM, 8 KB) 2887 views
07 May 2009 Read Abstract

View Application Notes for DC/DC Controllers (External Switch)

User Guides

Using the TPS51116 (Rev. A) (PDF, 521 KB) 3368 views
12 Nov 2008

View User Guides for DC/DC Controllers (External Switch)

Solution Guides

Notebook Computer Guide (Rev. A) (PDF, 2854 KB) 17294 views
30 Sep 2008

More Literature

Reference Design Cookbook 2 - Power Management (PDF, 3733 KB) 18885 views
27 Feb 2006

Tools & Software

Name	Part #	Company	Tool / Software Type
TPS51100EVM-001 Evaluation Module	TPS51100EVM-001	Texas Instruments	Development Boards/EVMs
TPS51116EVM-001 Evaluation Module	TPS51116EVM-001	Texas Instruments	Development Boards/EVMs

Simulation Models

PSpice Model
- TPS51116 PSpice Transient Model (ZIP, 96 KB) 27 views
  21 Jul 2009

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TPS51116 Status: ACTIVE

DDR1, DDR2, DDR3 Switcher and LDO

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Datasheet

Customers Who Evaluated This Product Also Evaluated