Patent ID: 9407255
Filing Date: 2016-08-02
CPC Classification: G11C,H03K

Claim Text:
1. A circuit for charging and discharging a node with a limited current, comprising: an output node of the circuit configured to be charged or discharged as rapidly as possible subject to a predefined maximum current; a first potential varying stage, which is designed to couple the output node of the circuit to a supply potential in reaction to an input signal, wherein a first current flows, wherein the first current is below the predefined maximum current, dependent on a potential of the output node of the circuit, between the output node of the circuit and the supply potential through the first potential varying stage; a second potential varying stage, which is designed to couple the output node of the circuit to the supply potential after the difference between the potential of the output node of the circuit and the supply potential drops below a predefined threshold value via the first current, the second potential varying stage comprising a second output node, the second output node configured to provide a second logical control signal, wherein a second current flows, dependent on the potential of the output node of the circuit and the logical control signal, between the output node of the circuit and the supply potential through the second potential varying stage; a third potential varying stage comprising a third output node, the third output node configured to provide a third logical control signal, the third potential varying stage designed to couple the output node of the circuit to the supply potential via the third logical control signal when the difference between the potential of the output node of the circuit and the supply potential lies below a further predefined threshold value; wherein when the first potential varying stage and the second potential varying stage are coupled to the output node of the circuit, the sum of the first current and the second current are below the predefined maximum current.