Seeking proper connections for LM2576S replacement

Support Q&A
1

------Question for LM2576S-5.0/NOPB Please Put your question below------

Not sure on how to connect. The old IC has 3 pins, the replacement has 5 pins. Can I omit pins 4&5 and just use pins 1-3 as gate, drain and source even though the pinout is described differently? The original 3 pin mosfet failed.

2

The part you are mentioning is a switching buck voltage regulator, the 5 pins are needed.

Whats the part marking on the original part? There is a likelihood we can identify that and find a suitable alternative.

3

I screwed up the title to my message, wrong ID. The part I am trying to replace is SVF4N65F. I believe it is a 3 pin N-channel mosfet.

thanks,
rich

4

If you’re looking for a replacement for SVF4N65F I would consider 5N65F by UMW

image
image640×640 24.8 KB

SVF4N65F Datasheet.pdf (908.6 KB)

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5

I totally screwed up what I was doing, too many things going on at once. I’m pretty sure this will work …STF3N62K3 as an alternative..

thanks again,
rich

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6

Messages crossed. Will take you up on your suggestion.

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