Self-biased voltage regulation circuitry for memory

摘要

Integrated circuits with voltage regulation circuitry are provided. Voltage regulation circuitry may be powered by a core supply voltage and may not have a bandgap reference circuit. Voltage regulation circuitry may have an error amplifier in a negative feedback configuration. The error amplifier may have inputs connected to reference voltages generated by resistor strings. The resistor strings may be trimmable to provide a desired negative voltage. The desired negative voltage may be fed to the gates of transistors to help reduce leakage. The desired negative voltage may be have improved tolerance to process-voltage-temperature variations and may improve the reliability of transistors.