LM3880: LM3880 outputs during power down

Daniel Baldor

Part Number: LM3880

I am looking at using the LM3880 to do power sequencing for my FPGA based design. What is the state of the flag outputs as the VCC goes below 2.7V (assuming the EN is low and all the flag outputs have all been pulled low prior to reaching 2.7V)?

Thanks

over 5 years ago

0 Qian Chen over 5 years ago

TI__Mastermind 24075 points

Hi Daniel,

It is thanksgiving holiday now. Our engineer will support you next Monday.

Thanks

Qian

0 Daniel Baldor over 5 years ago in reply to Qian Chen

Intellectual 340 points

Hi Qian,

Are there any updates on this?

Thanks,

Dan

0 yihe over 5 years ago

TI__Guru 65610 points

Hello

If EN is low, the flag will output low after VCC is below 2.7V. Just like when power up, FLAGs are low if EN is low during VCC ramps up.

Regards

Yihe

Power management

Power management forum

LM3880: LM3880 outputs during power down