- 制造厂商：TI
- 产品类别：电源管理
- 技术类目：DDR 存储器电源 IC
- 功能描述：用于汽车应用的 DDR 终端稳压器
- 点击这里打开及下载LP2998-Q1的技术文档资料
- TI代理渠道，提供当日发货、严格的质量标准，满足您的目标价格
The LP2998 linear regulator is designed to meet JEDEC SSTL-2 and JEDEC SSTL-18 specifications for termination of DDR-SDRAM and DDR2 memory. The device also supports DDR3 and DDR3L VTT bus termination with VDDQ min 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 LP2998 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 LP2998 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.
- AEC-Q100 Test Guidance with the following results (SO PowerPAD-8):
- Device HBM ESD Classification Level H1C
- Junction Temperature Range –40°C to 125°C
- 1.35 V 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
- DDR memory type
- DDR, DDR2, DDR3, DDR3L
- Control mode
- —
- Iout VTT (Max) (A)
- 1.5
- Iq (Typ) (mA)
- 0.32
- Output
- VREF, VTT
- Vin (Min) (V)
- 1.35
- Vin (Max) (V)
- 5.5
- Features
- Shutdown Pin for S3
- Rating
- Automotive
LP2998-Q1的完整型号有：LP2998QMR/NOPB、LP2998QMRE/NOPB、LP2998QMRX/NOPB，以下是这些产品的关键参数及官网采购报价：
LP2998QMR/NOPB，工作温度：-40 to 125，封装：SO PowerPAD (DDA)-8，包装数量MPQ：95个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：SN，TI官网LP2998QMR/NOPB的批量USD价格：.758（1000+）
LP2998QMRE/NOPB，工作温度：-40 to 125，封装：SO PowerPAD (DDA)-8，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：SN，TI官网LP2998QMRE/NOPB的批量USD价格：.758（1000+）
LP2998QMRX/NOPB，工作温度：-40 to 125，封装：SO PowerPAD (DDA)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：SN，TI官网LP2998QMRX/NOPB的批量USD价格：.648（1000+）
LP2998EVAL — 用于 LP2998 的评估板
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.
TIDA-00275 — 汽车仪表板宽输入电压电源设计
此 TI 参考设计是一种汽车仪表盘宽电压输入电源解决方案，包含一个带有集成 LDO 的宽电压输入降压转换器。还包含一个高效率同步降压直流/直流转换器。另外还包含一个线性稳压器，旨在使 DDR 终端符合 JEDEC SSTL-2 和 JEDEC SSTL-18 规格。此仪表盘电源解决方案已针对中端仪表盘市场进行优化，整个解决方案支持 6.0V-40V 系统功能，可承受启动停止和负载突降情况。前端降压转换器 (TPS65320-Q1) 能够支持 4.5V 冷启动情况。
