[volt-nuts] Micrel Ripple Blocker
kevin-usenet at horizon.com
kevin-usenet at horizon.com
Sun May 12 23:51:38 EDT 2013
> The Micrel datasheet shows a pretty standard source follower
> configuration. I checked similar low dropout/low noise regulators
> from Linear Technology and they have similar output noise and power
> supply rejection.
A source follower is an unusual choice for an LDO, since in theabsence
of a separate bias supply input, it requires a complex charge pump to
bias the gate.
re there a significant number like that? The LTC3035 uses that style
internally, but is optimized for VLDO, and only has 40 dB attentuation at
100 kHz, rather than 60.
Could I inquire which parts you looked at that had similar PSRR?
They would be useful to know about.
Thank you!
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