LM27761: Can this part deliver a boost negative output?

Roberto Sung

Part Number: LM27761
Other Parts Discussed in Thread: LMR70503

Hi,

I have this LM27761 part in my design powered at 3.3V and I need to deliver -4V. But the part seems to be limited to -3.2V. Is there a solution for -4V output using 3.3V input? Thanks, Roberto

over 5 years ago

0 Excel Regidor over 5 years ago

TI__Mastermind 37421 points

Hi Roberto,

LM27761 cannot boost the output voltage to -4V from a 3.3V supply. You can consider a buck-boost converter (LMR70503).

http://www.ti.com/product/LMR70503

Best regards,

Excel

0 Excel Regidor over 5 years ago in reply to Excel Regidor

TI__Mastermind 37421 points

Hi Roberto,

If you don't have further question, I will close this thread. In case you have other queries, feel free to post it anytime.

Best regards,

Excel

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LM27761: Can this part deliver a boost negative output?