A memory sub-system includes a power management integrated circuit (PMIC) compatible with operation at an uppermost PMIC supply voltage that is lower than a primary supply voltage of the memory sub-system. The PMIC is configured to output multiple voltages for operation of the memory sub-system based on a PMIC supply voltage. The memory sub-system further includes a capacitive voltage modifier (CVM) coupled to the PMIC. The CVM is configured to receive the primary supply voltage of the memory sub-system as an input and provide a first modified primary supply voltage (MPSV) to the PMIC as the PMIC supply voltage, where the first MPSV is not higher than the uppermost PMIC supply voltage.