Understanding noise in linear regulators

by John C. Teel, Analog IC Designer, Member Group Technical Staff, Texas Instruments, Vendor website, Apr 01 2005

Focus:
Factors such as the bandgap reference, the resistor divider, and the input stage of the op amp determine the output noise of low dropout linear regulators (LDOs).

What you’ll learn:

• How to understand the factors that determine the output noise in low dropout linear regulators (LDOs)
• How to reduce output noise in low dropout linear regulators (LDOs)
• How to compare noise specifications of different LDOs

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