Understanding power supply ripple rejection in linear regulators

Focus:

Factors such as open-loop gain, PSRR (power supply ripple rejection) of the bandgap reference, output capacitance, gate drive capability, load current, and parasitics determine the PSRR of low dropout linear regulators (LDOs).

What you’ll learn:

• How to understand the factors that determine the PSRR in low dropout linear regulators (LDOs)

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Author & Publication:

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

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