Patent ID: 7091768
Filing Date: 2006-08-15
Classification: G01R,H03K

Abstract:
1. An internal supply voltage driver control circuit, comprising: a plurality of drivers which are enabled or disabled in response to a plurality of enable signals, with the respective drivers outputting a plurality of internal voltages when the respective drivers are enabled for; and a control unit which includes fuses and operates in a test mode or a normal mode in response to a test mode entry signal, with the control unit outputting the plurality of enable signals for selectively or overall enabling the plurality of drivers in response to a plurality of address signals during the test mode and outputting the plurality of enable signals for selectively or overall enabling the plurality of drivers according to cutout of the fuses regardless of the plurality of address signals during the normal mode, wherein if the number of drivers being enabled is increased, current supplied by the drivers is increased, and if the number of drivers being enabled is decreased, current supplied by the drivers is decreased.