• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 62 subscribers
  • Views 482 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

LM3671: min. output voltage

Hiroshi Sato
Expert 2590 points
Part Number: LM3671
Other Parts Discussed in Thread: TPS62650

Hello,

In the datasheet 8.2.2 Typical Application: ADJ version,

we can see LM3671 can outputs from 1.1V to 3.3V.

However, in the following page, Table 3 shows the resistors setting for 0.9Vout.

Please could anyone  tell me what is the minimum output voltage for LM3671-ADJ ?

And, our customer want to use it with Vin=3.3V, Vout=1.0V, Iout=0.4A. 

Thanks,

Hiro

  • 0
    TI__Guru*** 145550 points
    Let me check on this. But can you use the TPS62239 instead? Vout should be much more accurate with the internal FB resistors.

    As well, there is the TPS62650 family with I2C, in case you want to adjust Vout on the fly.
  • 0 in reply to Chris Glaser
    Expert 2590 points

    Hello Chris-san,

    Thank you for your replying, TPS62239 looks good.

    The customer's requirements are space and cost,.

    For space, I think TPS62239 is  best, however,  the web price is 1.5 times as high as LM3671.

    The target spec is under surveying, and we'll also promote TPS62239 today or tomorrow.

    Thanks and best regards,

    Hiro