Overview
The LP2998MAE/NOPB is a 1.5-A DDR termination regulator produced by Texas Instruments. This linear regulator is designed to meet JEDEC SSTL-2 and JEDEC SSTL-18 specifications for the termination of DDR-SDRAM and DDR2 memory, and it also supports DDR3 and DDR3L VTT bus termination. The device features a high-speed operational amplifier to provide excellent response to load transients and includes a VSENSE pin for superior load regulation. It also has a VREF output as a reference for the chipset and DIMMs. The regulator is packaged in an 8-pin SOIC (D) package and operates over a temperature range of -40°C to 125°C.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LP2998MAE/NOPB |
| Package Type | 8-Pin SOIC (D) |
| Input Voltage Range | 2.2 V to 5.5 V |
| Output Current (Max) | 1.5 A |
| Operating Temperature Range | -40°C to 125°C |
| Output Voltage (VTT Min) | 0.677 V |
| Quiescent Current (Typ) | 0.32 mA |
| Special Features | Shutdown Pin for S3, Thermal Shutdown |
| RoHS Compliance | Yes |
Key Features
- Linear topology with no external resistors required
- High-speed operational amplifier for excellent response to load transients
- VSENSE pin for superior load regulation
- VREF output as a reference for the chipset and DIMMs
- Active low shutdown (SD) pin providing Suspend To RAM (STR) functionality
- Thermal shutdown for overtemperature protection
- Low output voltage offset and low external component count
- Supports DDR, DDR2, DDR3, and DDR3L memory types
Applications
The LP2998MAE/NOPB is primarily used for the termination of DDR-SDRAM and DDR2 memory. It also supports DDR3 and DDR3L VTT bus termination. This regulator is suitable for various applications requiring stable and regulated voltage for memory modules, including:
- DDR-SDRAM and DDR2 memory termination
- DDR3 and DDR3L VTT bus termination
- Server and workstation memory systems
- High-performance computing systems
- Embedded systems requiring stable memory voltage regulation
Q & A
- What is the primary function of the LP2998MAE/NOPB?
The LP2998MAE/NOPB is a DDR termination regulator designed to provide stable voltage for DDR-SDRAM and DDR2 memory, as well as DDR3 and DDR3L VTT bus termination.
- What is the input voltage range of the LP2998MAE/NOPB?
The input voltage range is from 2.2 V to 5.5 V.
- What is the maximum output current of the LP2998MAE/NOPB?
The maximum output current is 1.5 A.
- What is the operating temperature range of the LP2998MAE/NOPB?
The operating temperature range is from -40°C to 125°C.
- Does the LP2998MAE/NOPB have a shutdown feature?
Yes, it has an active low shutdown (SD) pin that provides Suspend To RAM (STR) functionality.
- Is the LP2998MAE/NOPB RoHS compliant?
Yes, the LP2998MAE/NOPB is RoHS compliant.
- What types of memory does the LP2998MAE/NOPB support?
The LP2998MAE/NOPB supports DDR, DDR2, DDR3, and DDR3L memory types.
- What is the package type of the LP2998MAE/NOPB?
The package type is an 8-pin SOIC (D).
- Does the LP2998MAE/NOPB require external resistors?
No, the LP2998MAE/NOPB does not require external resistors.
- What is the quiescent current of the LP2998MAE/NOPB?
The quiescent current is typically 0.32 mA.
