• State Resolved
  • Locked Locked
  • Replies 4 replies
  • Answers 1 answer
  • Subscribers 62 subscribers
  • Views 721 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.

TL760M33-Q1: Load Dump Protection

Kuramochi Tadahiko
Guru 28715 points
Part Number: TL760M33-Q1

Hi,

"Load Dump Protection" is mentioned on the top of the datasheet.

How does  this protection work?

And is this general function?

Best Regards,

Kuramochi

  • 0
    TI__Mastermind 23361 points
    Hi Kuramochi,

    Your question will be answered the next US business day. Please check back later.

    Regards,
    Jason Song
  • 0 in reply to Jason Song
    TI__Mastermind 23361 points

    Hi Kuramochi, 

    In one of the TI application notes, load dump test has been explained. A few comments from me: Load dump test is defined in ISO-7637-2 standard as pulse 5a/5b. As this device has a suppressor to 45V, the Us value showed in the following screenshot has been clamped at 45V. 

    The following screenshots are from this link: , Page 3 - 4

    Regards, 
    Jason Song

  • 0 in reply to Jason Song
    Guru 28715 points
    Jason-san,

    Thank you for your reply.

    Does it mean that 45V tolerance is load dump protection?

    I had never seen "Load dump Protection" in TI's automotive LDO products.
    Does TL760M33-Q1 have special function?
    Or, is it high voltage LDO simply?

    Best Regards,
    Kuramochi
  • 0 in reply to Kuramochi Tadahiko
    TI__Mastermind 23361 points
    Hi Kuramochi,

    Load dump protection is commonly seen with off battery wide-Vin LDOs in which applications LDOs have been directly powered by car battery. For this device, the 45V is the clamping voltage specifically pertaining to the load dump pulse test described in my previous post.

    Regards,
    Jason Song