LMR60430-Q1: Alternative Design Change

Evan Wang

Genius 9540 points

Part Number: LMR60430-Q1
Other Parts Discussed in Thread: LMR60430

Tool/software:

Hi Team,

My customer want to use the LMR604305SRAKRQ1 as the 2nd source for LMR604303SRAKRQ1 .

What I had learn that they already implement external Voltage divider network on FB pin.

From my understanding, if we use LMR604303SRAKRQ1 with below RFBT/B and create 3V or 3.3V VOUT, we can directly replace it with the LMR604305SRAKRQ1.

Since the VFB are all 1V right?

Please correct me if I was wrong.

Thank you.

28 days ago

0 Niranjan Nair 28 days ago

TI__Genius 9120 points

Hi,

Yes, if the parallel combination of external dividers exceed 3 kOhm, it will override the internal divider network. So you will get the set VOUT regardless of whether you use LMR604303SRAKRQ1 or LMR604305SRAKRQ1

Regards,

Niranjan

0 Evan Wang 27 days ago in reply to Niranjan Nair

TI__Genius 9540 points

Hi Niranjan,

it's clear to me.

Thank you.

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LMR60430-Q1: Alternative Design Change