What are the requirements for an LDO regulator in a multi-function power management IC?
The LDO must be able to provide a stable output low voltage output with minimum dropout at the rated output current. It should exhibit very low noise and a high power supply rejection ratio (PSRR). Its input voltage should be in the range of a single Li-ion or three NiMH batteries. Furthermore, it should have fast turn-on and turn-off to allow output power sequencing that does not affect system operation.
