Is there any buck converter similar to L5970D?

Aki Li

Other Parts Discussed in Thread: TPS5410, TPS54202

Customer is looking for our buck converter to replace L5970D, which has a 3.3V reference voltage output and adjustable voltage output at the same time. Do you have any suggestion? Thank you.

over 6 years ago

0 JohnTucker over 6 years ago

TI__Guru**** 191445 points

Aki,

Do you need an exact pin to pin replacement? Or just similar performance?

0 Aki Li over 6 years ago in reply to JohnTucker

TI__Genius 9895 points

It is ok with similar function/performance.

0 JohnTucker over 6 years ago in reply to Aki Li

TI__Guru**** 191445 points

Aki,

TPS5410 comes immediately to mind;
www.ti.com/product/TPS5410
I'm sure there are others as well. You can search here:
www.ti.com/.../overview.html

0 Aki Li over 6 years ago in reply to JohnTucker

TI__Genius 9895 points

John,

But I found L5970D has two output: 3.3V reference voltage output and adjustable voltage output.

0 JohnTucker over 6 years ago in reply to Aki Li

TI__Guru**** 191445 points

Aki,

That is not really a power output. It is rated for maximum load current of 5 mA. Is it a requirement to have that reference voltage available? Does it need to be 3.3 V? What is your required input voltage range?

0 Aki Li over 6 years ago in reply to JohnTucker

TI__Genius 9895 points

John,

Let me double check and then get back to you. Thank you!

0 Aki Li over 6 years ago in reply to JohnTucker

TI__Genius 9895 points

John,

Sorry for the mistake. The exact part number is L5970AD. As you said, that reference voltage is not necessary. I want to promote TPS54202. What do you think?

0 JohnTucker over 6 years ago in reply to Aki Li

TI__Guru**** 191445 points

Aki,

If input voltage only needs to go to 28 V, the TPS54202 is a good choice, especially if EMI is a concern. For 28 V input there are a lot of options available.

Power management

Power management forum

Is there any buck converter similar to L5970D?