DC-DC CONVERTER AND MOBILE COMMUNICATION TERMINAL USING THE SAME

摘要

PURPOSE: A DC-DC converter and a mobile communications terminal using the same are provided to eliminate a pulse skip mode by sensing an inputted input power source and increasing load of an output terminal in case the input power source conforms to a voltage of a specific range. CONSTITUTION: A resistive portion(100) electrically connects a predetermined resistance with a first output terminal. A switching element is located between the predetermined resistance and the first output terminal. A boost circuit(80) creates a first power source by boosting an input power source. The boost circuit outputs the first power source to the first output terminal. A buck circuit(90) creates a second power source by pressing the input power source. The buck circuit outputs the second power source to a second output terminal.