An electrical circuit comprising: a voltage selection circuit configured to receive a first voltage source and a second voltage source, and further configured to output a selected voltage, the voltage selection circuit comprising: a first transistor component having a first transistor component source, a first transistor component gate, and a first transistor component drain, wherein the first transistor component source is electrically connected to the first voltage source, and wherein the first transistor component gate is electrically connected to the first transistor component drain; a second transistor component having a second transistor component source, a second transistor component gate, and a second transistor component drain, wherein the second transistor component source is electrically connected to the first voltage source, and wherein a second transistor gate voltage at the second transistor component gate is generated based at least in part on a first transistor component drain voltage at the first transistor component drain, wherein the selected voltage is generated based at least in part on a second transistor drain voltage at the second transistor component drain; and a power-down switching device configured to generate a regulator gate voltage for a voltage regulator based at least in part on the selected voltage. a voltage selection circuit configured to receive a first voltage source and a second voltage source, and further configured to output a selected voltage, the voltage selection circuit comprising: a first transistor component having a first transistor component source, a first transistor component gate, and a first transistor component drain, wherein the first transistor component source is electrically connected to the first voltage source, and wherein the first transistor component gate is electrically connected to the first transistor component drain; a second transistor component having a second transistor component source, a second transistor component gate, and a second transistor component drain, wherein the second transistor component source is electrically connected to the first voltage source, and wherein a second transistor gate voltage at the second transistor component gate is generated based at least in part on a first transistor component drain voltage at the first transistor component drain, wherein the selected voltage is generated based at least in part on a second transistor drain voltage at the second transistor component drain; and a first transistor component having a first transistor component source, a first transistor component gate, and a first transistor component drain, wherein the first transistor component source is electrically connected to the first voltage source, and wherein the first transistor component gate is electrically connected to the first transistor component drain; wherein the first transistor component source is electrically connected to the first voltage source, and wherein the first transistor component gate is electrically connected to the first transistor component drain; a second transistor component having a second transistor component source, a second transistor component gate, and a second transistor component drain, wherein the second transistor component source is electrically connected to the first voltage source, and wherein a second transistor gate voltage at the second transistor component gate is generated based at least in part on a first transistor component drain voltage at the first transistor component drain, wherein the second transistor component source is electrically connected to the first voltage source, and wherein a second transistor gate voltage at the second transistor component gate is generated based at least in part on a first transistor component drain voltage at the first transistor component drain, wherein the selected voltage is generated based at least in part on a second transistor drain voltage at the second transistor component drain; and a power-down switching device configured to generate a regulator gate voltage for a voltage regulator based at least in part on the selected voltage.