LDO REGULATOR INCLUDING DUAL LOOP CIRCUIT, AND APPLICATION PROCESSOR AND USER DEVICE INCLUDING SAME

摘要

According to an embodiment of the present invention, an LDO regulator comprises: a course loop block, a fine loop block, and a digital control block. The course loop block generates a course code by receiving input voltage from an output terminal; and controls course current to be provided to the output terminal depending on the course code. The fine loop block generates a fine code by receiving the input voltage from the output terminal; and controls fine current to be provided to the output terminal depending on the fine code. The digital control block receives the course code from the course loop block; and generates a control signal for controlling the fine loop block. The LDO regulator according to an embodiment of the present invention controls output voltage (Vout) within a large voltage range by using the course loop circuit; and finely controls the output voltage (Vout) by using the fine loop circuit. The LDO regulator according to an embodiment of the present invention rapidly and accurately controls the output voltage (Vout).;COPYRIGHT KIPO 2017