Patent attributes
Disclosed is a switch control circuit coupled between a switch control node and a voltage terminal. The switch control node is between an input circuit and a switch. The switch control circuit includes: an electronic component being turned on or off according to voltages of the switch control node and a control voltage node in a power-on state and preventing the voltage of the switch control node from being higher than a predetermined voltage in a power-off state; a control circuit outputting a control signal to the control voltage node in the power-on state and having no effective control over the voltage of the control voltage node in the power-off state; and a resistive component coupled between the control voltage node and voltage terminal. The electronic and resistive components function as at least a part of a leakage path to assist in turning off the switch in the power-off state.
