Features Source and sink current Low external component count Independent analog and power rails Linear topology Small package SO-8 Low cost and easy to use Shutdown pin Description The LP2994 regulator is designed to provide a linear solution to meet the JEDEC SSTL-2 and SSTL-3 specifications (Series Stub Termination Logic) for active termination of DDR-SDRAM. The device utilizes an internal operational amplifier to provide linear regulation of VTT without the need for expensive external components. The output stage prevents shoot through while delivering 1.5A continuous current and maintaining excellent load regulation. The LP2994 also incorporates an active low shutdown pin to tri-state the output during Suspend To Ram (STR) states. Patents Pending Applications SSTL-2 SSTL-3 DDR-SDRAM Termination DDR-II Termination

Also Recommended LM2744▲ Switching Active Termination Regulator LP2996▲ Has Vref, Thermal Protection And Exposed Pad Packages

Typical Application click for larger image	Block Diagram click for larger image
Typical Performance click for larger image

Datasheets

Title		Size	Date	Other Language
	LP2994 DDR Termination Regulator	323 Kbytes	28-Mar-11	日本語

Part Number(s) (NSID)	Top View	Availability	Current Reported Stock	Budgetary Pricing	Pack Size

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LP2994M	LP2996MR	NATIONAL SEMICONDUCTOR	01 Dec 2009
LP2994MX	LP2996MRX	NATIONAL SEMICONDUCTOR	01 Dec 2009

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LP2994.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LP2994 is located at RoHS Status.

Part Number(s) (NSID)	Description	Availability	Current Reported Stock	Budgetary Pricing	Pack Size
LP2994EVAL	DDR Termination Regulator	Full production	Distributor Region Qty DIGI-KEY Worldwide 0	$10.50 each	1
LP2994 DDR Termination Regulator Features: Source and sink current Low external component count Independent analog and power rails Linear topology Small package SO-8 Low cost and easy to use Sutdown pin Applications: SSTL-2 SSTL-3 DDR-SDRAM Termination DDR-II Termination Contents: A fully assembled LP2994 evaluation board LP2994 evaluation board appnote LP2994 datasheet

National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

Lead Free product status is available through the search tool located here

Part Number(s) (NSID)	Weight (milligrams)	Type	Pins	MSL Rating	Peak Reflow	RoHS Status	CAD Symbols	Models	Package Marking Format

All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

Moisture Sensitivity Level Data for LP2994.

A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

National's certificate of product compliance for LP2994 is located at RoHS Status.

Obsolete Versions

Obsolete Part	Alternate Part or Supplier	Source	Last Time Buy Date
LP2994M	LP2996MR	NATIONAL SEMICONDUCTOR	01 Dec 2009
LP2994MX	LP2996MRX	NATIONAL SEMICONDUCTOR	01 Dec 2009