Low Drop Out 25mA Regulator TSMC 28nm

The S3REG2533T28HPCP is a regulator circuit which has
been designed to provide 0.9V with a load current of up to
25mA. The output voltage is programmable for minor
regulations.
The S3REG2533T28HPCP 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 S3REG2533T28HPCP has been designed to allow lowdrop
operation (the PMOS pass device has been scaled for a
voltage drop of 450mV). To achieve these goals, the
S3REG2533T28HPCP requires a 4.7μF external ceramic
capacitor.
The S3REG2533T28HPCP uses 2.5V thick oxide devices
from a standard 28nm logic process. The circuit can be scaled
for a range of load currents and the output voltage level is
trimmable.
The S3REG2533T28HPCP is readily portable to other
manufacturing processes or can be customised for specific
-Nwell process option.