A low-dropout linear regulator (LDO) without external capacitors is designed, combining ultra-low power consumption and ultra-fast transient response. The common support voltage of the LDO 2.5 V to 3.6 with a stable output 1.2 an current dynamic range 10 μA 20 mA supply other circuit modules. Rail-to-Rail Input-Output (RRIO) Class AB push-pull amplifier bias are also designed. Meanwhile, which ...