An integrated semiconductor device is disclosed which has a highly-integrated circuit formed on a substrate. A constant voltage generator is connected to the integrated circuit, for receiving an externally-supplied d.c. power supply voltage to produce a regulated d.c. voltage, the potential level of...http://www.google.de/patents/US4833341?utm_source=gb-gplus-sharePatent US4833341 - Semiconductor device with power supply voltage converter circuit
