Low Drop 50mA Regulator The S3REG5018T12FFC is a regulator circuit which has been designed to provide 1.8V with a load current of up to 50mA. The output voltage is programmable. The S3REG5018T12FFC is a regulator circuit that features an automatic feedback sensing option to maintain a constant regulated output voltage level. It has been designed to provide a stable output in both low-drop and high-drop operation, while maintaining minimum ripple on supply lines in the presence of large load current spikes inherent with switching loads, e.g. high-speed ADCs. The S3REG5018T12FFC has been designed to allow low-drop operation (the PMOS pass device has been scaled for a voltage drop of 200mV). To achieve these goals, the S3REG5018T12FFC requires a 1μF external ceramic