Integrated circuits (ICs) include electrostatic discharge protection including a transistor having a drain operably coupled to a first rail of the integrated circuit and a source operatively coupled to a second rail of the integrated circuit. A voltage regulating trigger circuit is operatively coupled to the first rail and to a gate of the transistor to turn on of the transistor responsive to an ESD event affecting the integrated circuit, wherein the voltage regulating trigger circuit limits a potential of the first rail to a first potential and a gate potential of the transistor to a second potential, less than the first potential but sufficient to turn the transistor on to conduct current arising from the ESD event from the first rail to the second rail.