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NE57811

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Datasheet

NE57811
(Product Specification)
02-Apr-03, 13 pages, 138 kB

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NE57811 - Advanced DDR memory termination power with shutdown

General description
Features
Products/packages
Quality/reliability/chemical content
Pricing/ordering/availability
Samples
Discontinued information
Applications
Block diagrams/pinning
Design support
Parametrics/similar products
Print/email
Disclaimers
All information hereunder is subject to the subsequent disclaimers

General description

The NE57811 is designed to provide power for termination of a Double Data Rate (DDR) SDRAM memory bus. It significantly reduces parts count, board space, and overall system cost compared to previous solutions.

The NE57811 DDR termination regulator maintains an output voltage (DDR reference bus voltage) that is one-half that of the RAM supply voltage. It is capable of providing up to +-3.5 A for sustained periods. Overcurrent limiting protects the NE57811 from inrush currents at start-up, and overtemperature shutdown protects the device in extreme temperature situations.

The SPAK-5 (SOT756) package is thermally robust for flexibility of thermal design. Because the NE57811 is a linear regulator, no external inductors or switching FETs are necessary. Fast response to load changes reduces the need for output capacitors.

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Features

  • Fast transient response time
  • Overtemperature protection
  • Overcurrent protection
  • Commercial (0 Cel to +70 Cel) temperature range
  • Reduced need for external components (switching FETs, inductors, decoupling capacitors)
  • Internal divider maintains termination voltage at 1/2 memory supply voltage
  • Reference out for other memory and control components
  • Shutdown pin that may be used to put the device into low power mode
  • Compatible with DDR-I (VDD = 2.5 V) or DDR-II (VDD = 1.8 V) SDRAM systems

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Products/packages

Type numberOrderable part numberOrdering code (12NC)Product statusPackagePackingMarkingECCN
NE57811S/N1NE57811S/N1,5189352 847 48518Volume productionSOT756
(SPAK-5) 		Reel Dry Pack, SMD, 13"Standard Marking

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Quality/reliability/chemical content

Type numberOrderable part numberChemical contentRoHSLeadfree Conversion dateRHFIRF (FIT)MTBF (hours)MSL
NE57811S/N1NE57811S/N1,518NE57811S_N1
Always Pb-free

Quality and reliability disclaimer

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Pricing/ordering/availability

Type numberOrdering code(12NC)Orderable part numberIndicative price/unit($)RegionDistributorIn stockOrder quantityInventory dateBuy onlineSamples
NE57811S/N19352 847 48518  NE57811S/N1,518  NAFUTURE ELECTRONICS2,000 11/19/2009Buy onlinenot available
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Applications

  • Desktop microcomputer systems
  • Workstations
  • Servers
  • Game machines
  • Set top boxes
  • Embedded systems
  • Digital video recorders

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Block diagrams/pinning

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Parametrics/similar products

Type numberPackageREMARKSOperating
temp.(Cel)		Power Dissipation(W)Operating voltage(VDC)
NE57811S/N1SOT756
(SPAK-5)		reduced power mode0~703.31.6~3.6


Similar products
NE57811 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

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