TI LP2998MAX

The LP2998 linear regulator is designed to meet JEDEC SSTL-2 and JEDEC SSTL-18 specifications for DDR-SDRAM and DDR2 memory termination. The device also supports DDR3 and DDR3L VTT bus termination with a minimum VDDQ of 1.35V. The device incorporates a high-speed op-amp that provides excellent response to load transients. The output stage prevents shoot-through while delivering 1.5A continuous current and up to 3A peak transient current in DDR-SDRAM termination applications. The LP2998 also integrates a VSENSE pin for superior load regulation and provides a VREF output as a reference for chipsets and DIMMs. Another feature of the LP2998 is an active-low shutdown (SD) pin that provides Suspend-to-RAM (STR) functionality. When the SD pin is pulled low, the VTT output enters a tri-state condition providing a high-impedance output, while VREF remains active. In this mode, power savings are achieved by reducing quiescent current.

• Compliant with AEC-Q100 test guidelines (SO PowerPAD-8 package), device HBM ESD classification level H1C
• Junction temperature range: -40°C to 125°C
• Minimum VDDQ: 1.35V
• Source and sink current capability
• Low output voltage offset
• No external resistors required
• Linear topology
• Suspend-to-RAM (STR) function
• Minimal external components
• Thermal shutdown protection

• DDR1, DDR2, DDR3, and DDR3L termination voltage
• Automotive infotainment systems
• FPGA
• Industrial/medical PC
• SSTL-18, SSTL-2, and SSTL-3 termination