Overview
The LP2998MRE/NOPB is a linear bus termination regulator designed and manufactured by Texas Instruments. This device is specifically engineered to meet the JEDEC SSTL-2 and JEDEC SSTL-18 specifications for the termination of DDR-SDRAM and DDR2 memory. Additionally, it supports DDR3 and DDR3L VTT bus termination with a minimum VDDQ of 1.35 V. The LP2998 features a high-speed operational amplifier that provides excellent response to load transients and delivers continuous current of 1.5 A with transient peaks up to 3 A, making it suitable for demanding memory termination applications.
Key Specifications
| Specification | Value | Unit |
|---|---|---|
| Package Type | SO PowerPAD-8 | |
| Number of Pins | 8 | |
| Operating Temperature Range | -40 to 125 | °C |
| Supply Voltage (Min) | 2.2 | V |
| Supply Voltage (Nom) | 2.5 | V |
| Supply Voltage (Max) | 5.5 | V |
| Continuous Output Current | 1.5 | A |
| Transient Peak Current | Up to 3 | A |
| Junction Temperature Range | -40 to 125 | °C |
| Lead Temperature (Soldering, 10 sec) | 260 | °C |
Key Features
- Linear topology with no external resistors required.
- Source and sink current capability.
- Low output voltage offset.
- Suspend to RAM (STR) functionality with an active low shutdown pin.
- Low external component count.
- Thermal shutdown for overtemperature protection.
- VSENSE pin for superior load regulation and VREF output as a reference for the chipset and DIMMs.
Applications
- DDR-SDRAM and DDR2 memory termination.
- DDR3 and DDR3L VTT bus termination.
- Automotive infotainment systems.
- Industrial and medical PCs.
- FPGA device applications.
- SSTL-18, SSTL-2, and SSTL-3 termination.
- HSTL termination).
Q & A
- What is the primary function of the LP2998MRE/NOPB?
The LP2998MRE/NOPB is a linear bus termination regulator designed to meet JEDEC SSTL-2 and JEDEC SSTL-18 specifications for DDR-SDRAM and DDR2 memory termination.
- What is the operating temperature range of the LP2998MRE/NOPB?
The operating temperature range is -40°C to 125°C.
- What is the maximum continuous output current of the LP2998MRE/NOPB?
The maximum continuous output current is 1.5 A, with transient peaks up to 3 A.
- Does the LP2998MRE/NOPB require external resistors?
No, the LP2998MRE/NOPB does not require external resistors.
- What is the purpose of the VSENSE pin on the LP2998MRE/NOPB?
The VSENSE pin is used for superior load regulation.
- What is the Suspend to RAM (STR) functionality in the LP2998MRE/NOPB?
The STR functionality allows the device to enter a low power state when the shutdown pin is pulled low, reducing quiescent current.
- Is the LP2998MRE/NOPB RoHS and REACH compliant?
- What are the typical applications of the LP2998MRE/NOPB?
- What is the package type of the LP2998MRE/NOPB?
- What is the maximum supply voltage for the LP2998MRE/NOPB?
