Compensation technique providing stability over broad range of output capacitor values

摘要: A disclosed amplifier and buffer circuit, for example a linear voltage regulator, comprises an input gain stage, integrator unity-gain output stage. An stage compensation scheme enables stable operation over broad range of capacitance. For low to moderate capacitance, the design effectively pushes pole high frequencies while internal provided by is dominant rolls off at lower frequencies. impedance couples pole, such that becomes gets pushed higher frequencies, maintaining stability. This connection may utilize base-emitter resistance bipolar junction transistor connected node, or use MOS separate RC circuit.