The LP2994 regulator is designed to provide a linear solution to meet the JEDEC SSTL-2 and SSTL-3 specifications (Se- ries Stub Termination Logic) for active termination of DDR- SDRAM. The device utilizes an internal operational amplifier to provide linear regulation of VTT without the need for expensive external components. The output stage prevents shoot through while delivering 1.5A continuous current and maintaining excellent load regulation. The LP2994 also in- corporates an active low shutdown pin to tri-state the output during Suspend To Ram (STR) states. Patents Pending Features: Source and sink current, Low external component count, Independent analog and power rails, Linear topology, Small package SO-8, Low cost and easy to use, Shutdown pin. Applications: SSTL-2, SSTL-3, DDR-SDRAM Termination, DDR-II Termination.
The LP2994 regulator provides a linear solution for JEDEC SSTL‑2 and SSTL‑3 DDR‑SDRAM termination. It delivers up to 1.5 A continuous current while maintaining excellent load regulation and includes an active low shutdown pin for power‑saving.
The device is supplied in an SO‑8 (M08) package, operates from 2.2 V to 5.5 V input, and features separate analog (AVIN) and power (PVIN) rails. Typical application circuits use minimal external components, with recommended input and output capacitors for transient response.
| Output Voltage (V7) | 2.5 V (typical) |
|---|---|
| Maximum Continuous Output Current | 1.5 A |
| Input Voltage Range (AVIN) | 2.2 V to 5.5 V |
| Package Type | SO‑8 (M08) |
The LP2994 can deliver up to 1.5 A continuous current while maintaining load regulation.
The regulator operates with an AVIN supply voltage from 2.2 V to 5.5 V.
The shutdown pin is active‑low; when asserted low it tri‑states VTT and reduces quiescent current.
The LP2994 is available in an SO‑8 (M08) surface‑mount package.