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LP2996A

現行

具適用 DDR2/3/3L 的關閉接腳 1.5A DDR 終端穩壓器

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產品規格表

LP2996A

現行
產品規格表 立即訂購

產品詳細資料

Vin (min) (V) 1.35 Vin (max) (V) 5.5 Vout (min) (V) 0.656 Vout (max) (V) 0.698 Features Shutdown Pin for S3 Rating Catalog Operating temperature range (°C) 0 to 125 Iq (typ) (mA) 0.32 Product type DDR DDR memory type DDR, DDR2, DDR3, DDR3L
Vin (min) (V) 1.35 Vin (max) (V) 5.5 Vout (min) (V) 0.656 Vout (max) (V) 0.698 Features Shutdown Pin for S3 Rating Catalog Operating temperature range (°C) 0 to 125 Iq (typ) (mA) 0.32 Product type DDR DDR memory type DDR, DDR2, DDR3, DDR3L
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • 1.35V Minimum VDDQ
  • Source and Sink Current
  • Low Output Voltage Offset
  • No External Resistors Required
  • Linear Topology
  • Suspend to Ram (STR) Functionality
  • Low External Component Count
  • Thermal Shutdown
  • LP2998/8Q recommended for
    –40°C to 125°C
  • 1.35V Minimum VDDQ
  • Source and Sink Current
  • Low Output Voltage Offset
  • No External Resistors Required
  • Linear Topology
  • Suspend to Ram (STR) Functionality
  • Low External Component Count
  • Thermal Shutdown
  • LP2998/8Q recommended for
    –40°C to 125°C

The LP2996A linear regulator is designed to meet the JEDEC SSTL-2 specifications for termination of DDR-SDRAM. The device also supports DDR2, DDR3 and DDR3L VTT bus termination with VDDQ min of 1.35V. The device contains a high-speed operational amplifier to provide excellent response to load transients. The output stage prevents shoot through while delivering 1.5A continuous current and transient peaks up to 3A in the application as required for DDR-SDRAM termination. The LP2996A also incorporates 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 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 will remain active. A power savings advantage can be obtained in this mode through lower quiescent current.

The LP2996A linear regulator is designed to meet the JEDEC SSTL-2 specifications for termination of DDR-SDRAM. The device also supports DDR2, DDR3 and DDR3L VTT bus termination with VDDQ min of 1.35V. The device contains a high-speed operational amplifier to provide excellent response to load transients. The output stage prevents shoot through while delivering 1.5A continuous current and transient peaks up to 3A in the application as required for DDR-SDRAM termination. The LP2996A also incorporates 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 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 will remain active. A power savings advantage can be obtained in this mode through lower quiescent current.
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技術文件

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類型 標題 日期
* Data sheet LP2996A DDR Termination Regulator datasheet PDF | HTML 2014年 6月 27日
Application note Limiting DDR Termination Regulators’ Inrush Current 2016年 8月 23日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

LP2998EVAL — 適用於 LP2998 的評估板

The LP2998 evaluation board is designed to provide the design Engineer with a fully functional prototype system in which to evaluate the LP2998 in both a static environment and with a complete memory system.

使用指南: PDF
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模擬型號

LP2996A PSpice Transient Model

SNOM562.ZIP (85 KB) - PSpice Model
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模擬型號

LP2996A Unencrypted PSpice Transient Model

SNOM564.ZIP (7 KB) - PSpice Model
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參考設計

TIDA-010011 — 用於保護繼電器處理器模組的高效電源供應架構參考設計

此參考設計展示各種電源架構，可為需要 >1A 負載電流和高效率的應用處理器模組產生多重電壓軌。所需的電源是使用來自背板的 5、12 或 24-V DC 輸入所產生。電源供應器是使用配備整合式 FET 的 DC-DC 轉換器，以及具尺寸整合式電感器的電源模組所產生。此設計採用 HotRod™ 封裝類型，適合需要低 EMI 的應用。此外也最適合設計時間有限的應用。其他功能包括 DDR 終端穩壓器、輸入電源 OR-ing、電壓序列、用於過載保護的 eFuse，以及電壓和負載電流監控。此設計可搭配處理器、數位訊號處理器以及現場可編程邏輯閘陣列使用。已通過輻射發射測試，符合 A 類和 B 要求的 (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDEP0067 — 66AK2Gx DSP + ARM 處理器電源解決方案參考設計

This reference design is  based on the 66AK2Gx multicore System-on-Chip (SoC) processor and companion TPS65911 power management integrated circuit (PMIC) which includes power supplies and power sequencing for the 66AK2Gx processor in a single device. This power solution design also includes (...)
Design guide: PDF
電路圖: PDF
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HSOIC (DDA) 8 Ultra Librarian
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