LP2998MRE

• Supply and sink current
• Low output voltage offset
• No external resistors are required
• Linear topology
• The ability to suspend to memory (STR).
• Low external component count
• Thermal shutdown
• In SO-8, it is available in a PSOP-8 package

illustrate

The LP2998 linear regulator is designed to meet the JEDEC SSTL-2 and JEDEC SSTL-18 specifications for terminated DDR1-SDRAM and DDR-II memory. The device contains a high speed operational amplifier to provide excellent load transient response. The output stage prevents shoot-through while providing DDR1-SDRAM termination requirements of 1.5A continuous current and DDR-II termination requirements of 0.5A continuous current. The LP2998 also uses V_SENSEPins that provide superior load regulation and one_{V REF}Output as chipset and DIMM reference.

An additional feature found by the LP2998 is an aggressive low shutdown (^SD) pin that provides the ability to suspend to memory (STR). ^ SD is pulled low when V_TTThe output will provide a high impedance output tristate while V_REFStill active. Power saving advantage allows lower quiescent current in this mode.

apply

• DDR-II and DDR-III termination voltages for DDR-I
• SSTL-18 termination
• SSTL-2 and SSTL-3 terminate
• HSTL termination