• State TI Thinks Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 1 answer
  • Subscribers 63 subscribers
  • Views 131 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.

LM3409-Q1: LM3409-Q1min pulse length

Meng Liu
Intellectual 1765 points
Part Number: LM3409-Q1

Hi Expert

application condition:

input voltage: 12V

output: 1.7~3.5V 3A

120Hz

my customer have four question as below:

1. how many is our device minimum pulse length? how to calculate it?(i know 115ns is device min pulse but we want to know min pulse in the above condition)

2. in the min pulse, how to get output current minimum current? my customer require LM3409-Q1 output current need to less than 10mA in the min pulse condition?

3. in the min pulse condition, how many output current is minimum value meanwhile output current is stable?

4. On-chip switching frequency？

  • 0
    TI__Intellectual 1675 points

    Hello,

    Thank you for your question. Our engineer that covers this device is out for the American holiday, but will get back to you as soon as he is back.

    Best Regards,

    Caroline

  • 0 in reply to Caroline Fuschino
    TI__Mastermind 18890 points

    Hello Meng,

    The questions you are asking has to do with system design and depending on the design you will have to test it for that application.  I would recommend them to get an evaluation board to help them with their design and testing.  As for the on chip switching frequency...This is not a internal fix frequency part.  The switching is explained in section 8.3.5 of the data sheet.

    Thanks Tuan