ESD PROTECTION CIRCUIT AND SEMICONDUCTOR DEVICE RELATING TO ESD PROTECTION CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide an ESD protection circuit reduced in layout area or having high ESD resistance.SOLUTION: In an ESD protection circuit, in the application of an ESD pulse, a node 3N3 of a gate of a second NMOS transistor 3MN2 which mainly flows a surge current in an ESD protection circuit 110 is connected to a node 3N4 by a PMOS transistor switch 3MPso that an NMOS output transistor 3MNof an LED driver output circuit 210 can be turned on.