Abstract: A voltage regulator provides current for a circuit module having an array of similar semiconductor circuit devices, such as a SIMM (single in line memory) array of semiconductor circuit devices. The semiconductor circuit devices in the array are designed to accept a range of potential that, and the potential provided by the voltage regulator are within that range. The voltage regulator circuit receives current at elevated supply potential and provides a steady output at a controlled potential to the array. This provides clean power to the memory module and permits the establishment of internal tolerances for variation in potential which are more restrictive than that afforded by an external power supply.

Abstract: A module such as a SIMM or other type of memory module is provided with supply power at a higher potential than the operating potential of semiconductor memory devices on the module. A voltage regulator circuit on the module reduces the potential supplied to the memory devices and provides the power to the memory devices at regulated potential than would be achieved by providing the supply power at the desired potential in the first place. Advantages include reduction in error rate, even when semiconductor components are used which are unusually susceptible to variations in supply potential.