Negative voltage output charge pump circuit

摘要: In a negative voltage output charge pump circuit, first capacitor C 1 is charged with positive Vin relative to reference voltage, and then the high-potential terminal A of made conduct simultaneously low-potential B an OUT so that which as −Vin. Here, at least one switching device DP kept on while being apply point 2 make depletion-type transistor. This configuration makes it possible realize circuit free from malfunctioning caused by parasitic device, operates low loss, can be produced costs.