Patent ID: 6662084
Filing Date: 2003-12-09
Classification: G06F,H02M,Y02B

Abstract:
An electronic device, comprising:an internal circuit including a first operation mode consuming a first operational current and a second operation mode consuming a second operational current, which is smaller than said first operational current; a first regulator providing a predefined supply voltage from an input voltage and having a current supply ability corresponding to said first operational current of said internal circuit; a second regulator having a current supply ability corresponding to said second operational current; and a power supply control unit operating said first regulator in response to a first control signal instructing said first operation mode and/or operating said second regulator in response to a second control signal instructing said second operation mode of said internal circuit, wherein said first regulator has a higher power conversion efficiency than said second regulator for supplying a large current to said internal circuit, said second regulator has a higher power conversion efficiency than said first regulator for supplying a small current to said internal circuit, said internal circuit is capable of outputting information which includes said first control signal and said second control signal, and said internal circuit and power supply control unit are provided in one semiconductor integrated circuit device.