The invention relates to a control unit, a low dropout linear regulator, an electrical energy supply circuit and a control method. According to an embodiment provided by the invention, the control unit comprises a subtractor which is used to generate a first error signal based on a reference voltage signal representing reference voltage and a first detection voltage signal, and an adder which is used to generate a total error signal which represents the sum of the first error signal and a regional error signal. The scheme provided by the invention has at least one of the advantages of controlling of load network voltage distribution, wiring simplifying, wiring interference reducing and improving of voltage control accuracy.