Radiation Tolerant 3A Source and Sink DDR Terminator/LDO with Buffered Reference

The ISL75055M is a radiation tolerant, low-dropout linear regulator designed for powering the VTT termination rail and VREF reference supply for Double Data Rate (DDR) memory modules or for use as a general-purpose LDO. It is capable of sourcing and sinking 3A of current with just 600µV of dead band crossover and has separate 2.7V to 5.5V bias and 0.75V to 5.5V LDO input rails to minimize internal losses while maintaining highly accurate output regulation. Protection features include individual adjustable overcurrent protection for both sourcing and sinking, as well as over-temperature protection.

The ISL75055M is offered in a 48-lead Thin Plastic Quad Flatpack Exposed Pad Package (TQFP-EP) and operates across the full military temperature range of -55°C to +125°C.