• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 178 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.

LM62440-Q1: Could it replace LM61460 without changing peripheral circuit

Zirui Su
Expert 5340 points
Part Number: LM62440-Q1
Other Parts Discussed in Thread: LM61460

Hi

I would like to ask that could LM61460AASQRJRRQ1 be replaced by LM62440BPPQRJRRQ1 without changing peripheral circuit? Urgent for LM61460AASQRJRRQ1 shortage, or could you please tell me which device could replace LM61460AASQRJRRQ1 completely?

  • 0
    TI__Mastermind 27045 points

    Hi Zirui,

    First pls confirm if the load current below 4A?

    LM61460 has adjustable output, LM62440B has fixed 3.3V out, the feedback network must be changed for this difference.

    B R

    Andy 

  • 0 in reply to Andy Chen
    TI__Expert 5340 points

    Hi Andy,

    I have confirmed that the output be sure below 4A and they just need the 3.3V output. Could it be possible to replace?

  • 0 in reply to Zirui Su
    TI__Guru 50120 points

    Hi Zirui,

    The LM61460AASQRJRRQ1 and LM62440BPPQRJRRQ1 have slightly different pinouts. 

    Notably:

    LM61460AASQRJRRQ1 has Pin 6 (RT) and Pin 7 (EN/SYNC)

    LM62440BPPQRJRRQ1 has Pin 6 (MODE/SYNC) and Pin 7 (EN).

    It would highly depend on if the customer is using any of the synchronization function to determine if it is a simple drop in replacement.

    If customer wants the most basic operation at 2.2MHz, then with the LM62440BPPQRJRRQ1 Pin 6 can have a resistor (0Ohm) set to GND for AUTO mode and Pin 7 pulled to VIN. 

    Regards,

    Jimmy