A novel technique to enhance the stability and the supply rejection of a Miller compensated LDO

A novel technique is utilized to enhance the power supply rejection of a Miller compensated LDO. The frequency compensation tracks the load variations in order to conserve stability across the whole load current range. From a minimum supply of 2.7 V, the LDO provides a regulated 2.4 V output, for a load range of 0-2 mA. The improvement in the supply rejection is at least 10 dB at 2 mA load. At no load, the supply rejection improved by 26 dB. The LDO is simulated using AMS-0.35 ¿m technology.