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Original question:

LMR36006-Q1: Is 12V output from LMR36006 possible

LMR36006-Q1: LMR36006 power on short issue

Bo Xian Yeh
Intellectual 1315 points
Part Number: LMR36006-Q1
Other Parts Discussed in Thread: LMR36006, LM73606, LM62460-Q1

Tool/software:

Hi Expert,

There is an issue for LMR36006 design.

For our design requirement, we need FPWM for our system and which need SYNC pin pull up.

It was connected SYNC to Vin at REF SHC, after we filled in our design for our requirement.

But the maximum voltage limit of this pin is 5.5V while our Vin is 12V.

So, PMIC was break when we power on the system and find pin17 is short

Hope you can fix this bug to avoid other users meet same issue.

Below is schematic for your reference. 

  • 0
    TI__Mastermind 35190 points

    Hi Bo Xian, 

    LM73606 does have a lower ABSMAX than the VIN ABSMAX sorry for the surprise.

    A workaround could be to utilize a resistor divider.

    LM62460-Q1 could be an alternative device selection with a similar feature set, but higher ABSMAX on MODE pin to avoid needing to use a voltage divider.

    Thank you for posting and making others aware.