LMR12010X Floating BOOST pin failure mode

Victhor Foster

Prodigy 60 points

What is the expected failure mode of the LMR12010X when the BOOST pin is left floating?

over 13 years ago

0 Denislav Petkov over 13 years ago

TI__Mastermind 19891 points

Hello Victhor,

If you leave BOOST floating, the internal gate driver will not have enough voltage to properly drive the NMOS switch and the output voltage will not be regulated. The NMOS switch will probably heat up due to higher power dissipation if the output of the regulator is loaded.

Regards,

Denislav

0 Victhor Foster over 13 years ago in reply to Denislav Petkov

Prodigy 60 points

Thank you, this coincides with the results of testing I have performed.

Power management

Power management forum

LMR12010X Floating BOOST pin failure mode