LMR51403: LMR51403YFDBVR switching frequency question

Roy Lin1

Part Number: LMR51403

Tool/software:

Hi team,

As we knew LMR51403YFDBVR is a 1.1MHz device,

is the frequency always fixed at 1.1MHz? Or customer can change the inductor and Co to make fsw=800kHz?

They think 1.1Mhz is too fast. Thanks

0 Andrew Kutzler 6 months ago

Hi Roy,

For LMR51403X/Y, The only way to change the FSW to to use the other OPN.

Unfortuneatly there's no way to change FSW to 800KHz.

1.1MHz should be fine. I recommend they test the EVM if they have concerns.

Thanks,

Andrew

Power management forum