Patent ID: 8854097
Filing Date: 2014-10-07
Classification: H03K

Abstract:
1. An integrated circuit (IC) comprising: an enable pin; a ground pin; an input pin; an output pin; a load switch that is coupled between the input pin and the output pin, wherein the load switch receives a negative voltage through the input pin; and control circuitry that is coupled to the enable pin, the ground pin, and the load switch, wherein the control circuitry controls the load switch, and wherein the control circuitry uses the ground pin as a positive supply rail and the input pin as an internal ground, wherein the control circuitry further comprises: a level shifter that is coupled to the ground pin, the input pin, and the enable pin; and a slew rate controller that is coupled to the level shifter, the input pin, and the load switch, wherein the level shifter further comprises: