The LDOs has characteristics 1. Output voltages includes adjustable/ fixed modes. 2. Superexcellent OCP, OVP, OTP. 3. No switching noise and small package.
Low IQ LDOs avoid unwanted battery drain in micro power applications.
In applications that require a very clean and low noise output voltage, will need to the following key s election criteria. 1. Low noise. 2. Good PSRR.