Integrated circuit with internal voltage reducer and ageing test mode - transfers voltage corresp. to change in external voltage, to internal supply line in response to ageing mode activation signal

摘要

The integrated circuit contains a power mode control circuit (1), an internal voltage supply reducer circuit (2), internal circuitry (3) and external interface circuitry (4) running at the supply voltage (Vcc). The control circuit switches the voltage reducing circuit to stabilise the internal voltage at Vo when the supply voltage (Vcc) exceeds it. When the supply voltage exceeds a second threshold V1 the internal voltage increases further as the supply voltage Vcc increases. USE/ADVANTAGE - E.g. for DRAMs etc. Only increases internal supply voltage if aging test is necessary. Increases reliability of IC and reduces power consumption.