Low-dropout linear voltage regulating circuit

The invention belongs to the technical field of integrated circuits, and particularly relates to a low-dropout linear voltage regulating circuit. Compared with the common LDO, the low-dropout linear voltage regulating circuit adopts a negative feedback loop consisting of a second PMOS tube MP2, a fourth NMOS tube MN4, a fifth NMOS tube MN5, a seventh NMOS tube MN7 and an eighth NMOS tube MN8, so that a feedback structure is simple and integration is easy.