• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 47 subscribers
  • Views 729 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

LM6172: Power supply @ ±12V

Massimo Bruccoleri23
Prodigy 20 points
Part Number: LM6172
Other Parts Discussed in Thread: LM6171

Hello, I read that LM6172 is specific and operates on ±15V or ±5V, I think it is optimized to these power supply values.
My maximum capability is ±12V, shall I lost a lot of performance?
Which is the maximum value that output can assume? (is an rail to rail)
Exist a version with 4 amp in one IC? Is LM6171 similar?

Thanks very much
Massimo

  • 0
    TI__Mastermind 23226 points
    Hi Massimo,

    The LM6172 is specified for 5.5V < Vs < 36V, so Vs=24V (±12V) is fine. The performance will be somewhere between that of the 30V and 10V specifications.

    The output voltage range will depend on the load current and ambient temperature. Use Figures 8 and 9 in the datasheet to estimate a range based on your expected load and ambient temperature. What is important is the headroom to the rails. For example, if operating a 100 ohm load at 25 degrees C for Vs=24V (±12V), I would expect a output range of at least ±8V (the 30V supply is 4V away from the rail under these conditions) and at most ±9.8V (the 10V supply is 2.2V away from the rail under these conditions).

    Best regards,

    Sean