Patent ID: 7002219
Filing Date: 2006-02-21
Classification: H01L

Abstract:
1. An electrically programmable fuse comprising: a first metal-oxide-semiconductor (MOS) transistor, the first MOS transistor having a nominal snapback voltage, wherein the first MOS transistor comprises a first n-type MOS (NMOS) transistor, wherein the source of the first MOS transistor is connected to ground; and a regulating element coupled between a gate of the first MOS transistor and a source of the first MOS transistor for lowering a snapback voltage of the first MOS transistor below the nominal snapback voltage, wherein the regulating element is a resistive element comprising a second NMOS transistor, wherein a drain of the second NMOS transistor is connected to the gate of the first MOS transistor, and wherein a source of the second NMOS transistor and a gate of the second NMOS transistor are connected to ground.