LP2951-Q1: Output capacitor of LP2951-50-Q1

Masami Michino

Part Number: LP2951-Q1

Dear, All

Customers are considering LP2951-50-Q1.
They have questions about the ESR of the output capacitor.
When MLCC is used, the Min value of ESR is described in the data sheet as follows.
20mohm to 30mohm.
In which frequency range should this be examined?
For example, should I satisfy with 1 MHz or less of the ESR characteristic characteristic of MLCC?
Please tell us.

Thanks, Masami M.

over 7 years ago

0 Ryan Eslinger over 7 years ago

TI__Guru 55940 points

Hi Masami,

For any LDO, the frequency at which the ESR should be evaluated at is the resonant frequency of the capacitor. This is where the impedance changes from falling to rising.

Very Respectfully,
Ryan

0 Masami Michino over 7 years ago in reply to Ryan Eslinger

Genius 5070 points

Hi, Ryan-san,

Thank you for your reply.
I answer it to the customer.

Thanks, Masami M.

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LP2951-Q1: Output capacitor of LP2951-50-Q1