INTERNAL VOLTAGE GENERATING CIRCUIT, CAPABLE OF INDUCING THE STABLE GENERATION OF A VOLTAGE BY REDUCING A VOLTAGE LEVEL VARIATION

摘要

PURPOSE: An internal voltage generating circuit is provided to reduce the generation of over pumping noises by regulating a charge pumping amount according to the level of an external supply voltage.;CONSTITUTION: A level detector(110) generates a pumping operation controlling signal by detecting a feedback potential level. A ring oscillator(112) generates a periodic signal using the outputted signal of the level detector. A clock signal(OSC) regulating part(114) controls the generation of a plurality of outputting signals according to the level of an external supplying voltage. A pump controlling logic(116-122) generates a pump driving signal using the periodic signal. A charge pump(124-130) is driven by the pump driving signal of the pump controlling logic.;COPYRIGHT KIPO 2011