Semiconductor integrated circuit chip built-in voltage drop circuit (Built-in Semiconductor IC Chip)

摘要

The present invention relates to a voltage drop circuit to be embedded in a highly integrated IC chip including a voltage divider and a voltage comparator. The divided output voltage (VINT) of the voltage divider and the comparison reference voltage (VREF) are applied to the respective input terminals (-) and (+) of the voltage comparator. The output signal of the voltage comparator generates a control pulse and controls the connection of the capacitor in the voltage divider section of the voltage divider by the control pulse to supply the divided output voltage VINT to the load circuit in the control signal generator section of the voltage divider . In this case, the capacitors are used as a voltage dividing member for generating a voltage for an internal circuit from an external voltage. Thus, the power loss can be reduced and the utilization efficiency of the capacitor is increased. Therefore, the voltage drop circuit is suitable for highly integrated IC chips.