High voltage low quiescent current LDO with self-regulation impedance buffer

Abstract To improve the whole characteristic of LDO, a low quiescent current structure high voltage LDO with self-regulation impedance buffer and bandgap amplifier is presented in this paper. With proposed, function reference error can be achieved simultaneously, which efficiently reduce consumption. The load capacitor as small 0.47 µ F by using compensation scheme. has been implemented 0.18 m process die size 0.03 mm 2 . Without load, consumption 1 A. Experimental result shows that overshoot undershoot line transient response are less than 30 mV/V. regulation about 0.1A, 0.07 mV/V at no condition.