daksh333/ADLDO
The main function of LDO is to maintain constant output voltage which is equal to reference
voltage VREF to sub-circuits in a system on Chip. There are analog LDOs that are suitable for
noise sensitive load circuits. The disadvantage with Analog LDO is that is does provide
sufficient loop gain at low supply voltages. The reason for insufficient. The different blocks of
analog LDO are
• Error Amplifier
• Bandgap reference
• PMOS Pass transistors and feedback loop.
Digital LDOs are gaining significant attention because of low power and area constrained
design. The D-LDO is composed of
• Switch array
• Comparator
• Digital controller