Patent ID: 8289073
Filing Date: 2012-10-16
Classification: G05F,H03F

Abstract:
1. A semiconductor device having a voltage regulator comprising: an operational amplifier configured to compare an input voltage with a feedback voltage and output an output voltage; an up-resistor connected between an output of the operational amplifier a first node; a down-resistor connected between a second node and a ground voltage terminal; and a switching unit including a fuse box connected between a third node outputting the feedback voltage and a fourth node having a variable resistance value, and configured to connect the first node with the fourth node and the second node with the third node, or connect the first node with the third node and the second node with the fourth node, wherein at least a part of the output voltage is applied across the up-resistor, wherein the switching unit includes: a fourth switch configured to connect the second node with the third node.