National Semiconductor LP2997 DDR-II Termination Regulator Data Sheet - User Manual
Summary
The LP2997 is a specialized linear regulator designed for robust termination in DDR-II SDRAM circuits, ensuring high signal integrity as per JEDEC SSTL-18 specifications. This device features customizable Suspend To RAM (STR) functionality and handles significant transient loads up to 900mA. The manual provides complete technical documentation, including detailed electrical characteristics, connection diagrams for SO-8/PSOP-8 packages, and absolute maximum ratings. It is essential reading for hardware engineers and system designers building reliable, high-speed memory platforms requiring precise voltage regulation.
Manual Details
| Brand | National |
|---|---|
| Pages | 12 |
| File Size | 621.34 KB |
| Published | June 16, 2026 |
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Frequently Asked Questions
Do I need external resistors to use this regulator?
No external resistors are required; the device is designed to provide proper termination for DDR-II SDRAM.
How does the active low SD pin function?
Pulling the SD pin low enables Suspend To RAM (STR) functionality and lowers quiescent current consumption.
What is the maximum continuous output current capability?
The LP2997 can deliver 500mA of continuous current, with transient peaks up to 900mA.