A High Power Supply Rejection and Fast Settling Time Capacitor-Less LDO

This paper presents an internally compensated capacitor-less low dropout regulator (CL-LDO) with bulk-driven feed-forward supply noise cancellation and adaptive compensation for fast settling time (TS ). A feed-forward path from the CL-LDO's supply input to the output is implemented to increase power supply rejection (PSR) from mid-range frequencies to up to 5 MHz. The CL-LDO achieves a -90 dB low...