The LP2996-N and LP2996A linear regulators are designed to meet the JEDEC SSTL-2 specifications for termination of DDR-SDRAM. The device also supports DDR2, while LP2996A supports DDR3 and DDR3L VTT bus termination with VDDQ minimum of 1.35 V. The device contains a high-speed operational amplifier to provide excellent response to load transients. The output stage prevents shoot through while delivering 1.5-A continuous current and transient peaks up to 3 A in the application as required for DDR-SDRAM termination. The LP2996-N and LP2996A also incorporate a VSENSE pin to provide superior load regulation and a VREF output as a reference for the chipset and DIMMs.
An additional feature found on the LP2996-N and LP2996A is an active-low shutdown (SD) pin that provides Suspend To RAM (STR) functionality. When SD is pulled low the VTT output will tri-state providing a high impedance output, but VREF remains active. A power savings advantage can be obtained in this mode through lower quiescent current.
TI recommends the LP2998 and LP2998-Q1 devices for automotive applications and DDR applications that require operating at temperatures below zero.
WEBENCH® design tools can be used by application designers to generate, optimize, and simlulate applications using the LP2998 and LP2998-Q1.
| Typ | Titel | Datum | ||
|---|---|---|---|---|
| * | Data sheet | LP2996-N, LP2996A DDR Termination Regulator datasheet (Rev. K) | PDF | HTML | 23 Dez 2016 |
| Application note | Limiting DDR Termination Regulators’ Inrush Current | 23 Aug 2016 | ||
| EVM User's guide | AN-1268 LP2996 Evaluation Board (Rev. A) | 07 Mai 2013 |
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The LP2996 evaluation board is designed to provide the design engineer with a fully functional prototype system in which to evaluate the LP2996 in both a static environment and with a complete memory system. There are two versions of the board, and while identical in functionality they differ in (...)
| Gehäuse | Pins | CAD-Symbole, Footprints und 3D-Modelle |
|---|---|---|
| HSOIC (DDA) | 8 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |
| WQFN (NHP) | 16 | Ultra Librarian |
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