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Pat. 11398804 United States, Int. Cl.22 H03G 3/00, H02M 3/07, H03F 1/02, H03F 3/183, H03G 3/30. Variable-frequency charge pump using output voltage threshold control : Appl. N 16/986623 : Filed 06.08.2020 : Pub. 26.07.2022 : / Jason W. Lawrence, Eric J. King, Christian Larsen, Hasnain Akram, Eric Kimball ; Assignee Cirrus Logic Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11398804/en?oq=US11398804.html (дата обращения: ДД.ММ.ГГГГ).