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LM2576S-ADJEVM: LM2576 Cin and Cout Capacitors

Part Number: LM2576S-ADJEVM
Other Parts Discussed in Thread: LM2576


I am using LM2576 with ADJ version.

I used SMD Electrolitic capacitors in the Cin and Cout. Everything is OK.

But in my new designe i need smaller height.

My question is, if i will use Tantalium capacitor instead of SMD Electrolitic capacitor it will cause any problem in the future ?

Best regards,

  • Low ESR ceramics are used and recommended for:

    1. Low output ripple

    2. Better transient response

    On the otherside, the ESR of an electrolytic can allow for:

    1. Damping of the input filter and wires

    2. Increased phase margin and bandwidth due to zero introduced

    Be sure to do stability analysis in webench and/or lab to verify effect of capacitor selection and value.