LM2594: Capacitors and inductors selection

Marcos Santos

Part Number: LM2594

Hi,

In datasheet of this part, the capacitors and inductors indications is out of date, I want to check if this of I have selected is ok

My application: 250mA Máx load, 3.3V fixed, Vin 24V.

Inductor: 150uh 0.71A Würth Elektronik 744787151

Capacitor in: 68uF 80V 270mA Vishay MAL214699705E3

Capacitor out: 100uF 6.3V 595D107X96R3C2T

Diode: VS-10MQ060-M3/5AT

Thank you

over 3 years ago

+1 Marshall_Beck over 3 years ago

TI__Mastermind 35210 points

Hello Marcos, for the most part these component selections seem OK.

I would advise, if this design is to be subject to output short-circuit fault, then, selecting a higher power rating on the inductor, as looking at the saturation curve of the inductor, it saturates quite heavily at the device's peak current limit (ICL).

0 Marcos Santos over 3 years ago in reply to Marshall_Beck

Prodigy 10 points

Ok, thank you for quick reply.

0 Marshall_Beck over 3 years ago in reply to Marcos Santos

TI__Mastermind 35210 points

You are welcome

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LM2594: Capacitors and inductors selection