SEMICONDUCTOR DEVICE

摘要

A semiconductor device includes a first transistor connected to an internal voltage terminal and a first node at which a first resistance unit is connected. The first resistance unit includes a resistor connected between the first node and a node from which a monitoring voltage is provided for controlling the first transistor. This resistance unit also includes a first resistance adjustment unit connected in parallel with the first resistor. Also included is a second resistance unit having a third resistor connected between the monitor node and a second node which is connected to a ground potential and a second resistance adjustment unit connected in parallel with the third resistor. A comparator comparing the monitor node voltage to a reference is provided with an output terminal connected the first transistor. Also included is a control circuit to control the resistance adjustment units.

主权项

1. A semiconductor device, comprising:
a first transistor having a first end connected to an internal voltage terminal and a second end connected to a first node; a first resistance unit including:
a first resistor connected between the first node and a monitor node, anda first resistance adjustment unit connected in parallel with the first resistor, the first resistance adjustment unit including a second resistor and a first switch connected in series; a second resistance unit including:
a third resistor connected between the monitor node and a second node, anda second resistance adjustment unit connected in parallel with the third resistor, the second resistance adjustment unit including a fourth resistor and a second switch connected in series; a first comparator having an output terminal connected to a gate electrode of the first transistor and configured to compare a voltage of the monitor node to a reference voltage and output a control line voltage according to the comparison; and a resistance control circuit configured to control a conductance of the first switch and a conductance of the second switch on the basis of an operation initiation signal.