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LM74502-Q1: could it pass the ISO7637-2 pulse 1~4 and ISO16750-2 pulse test-A/B in 12/24V systems?

Part Number: LM74502-Q1
Other Parts Discussed in Thread: LM74721-Q1, LM74701-Q1

Hi Sirs,

My customer is interested in the TVS-less ideal diode device LM74502-Q1 and has a question about the compliance test result.

Could it pass the ISO7637-2 pulse 1~4 and ISO16750-2 pulse test-A/B in 12/24V systems?

If it can't, which device can pass these compliance tests?

  • HI Henry,

    By  ISO16750-2 pulse test-A/B, do you mean suppressed load dump and unsuppressed load dump (which can go as high as 200V) ?

    Also, for your information,

    • LM74701-Q1 , LM74721-Q1 are capable of input TVS less operation for ISO 7637-2 Pulse 1
    • LM74502-Q1 is not capable of TVS less operation for ISO 7637-2 Pulse 1
  • Hi Sir,

    By  ISO16750-2 pulse test-A/B, do you mean suppressed load dump and unsuppressed load dump (which can go as high as 200V) ? => Yes.

    Thank you for your sharing info about the LM747x1-Q1 and LM74502-1, may I know if these devices also pass the ISO 7637-2 Pulse 2 to 4?

  • Hi Henry,

    Yes, LM747x1-Q1 and LM74502-1 can pass ISO 7637-2 Pulse 2 to 4 tests.

    • LM74701-Q1 , LM74721-Q1 are capable of input TVS less operation for ISO 7637-2 Pulse 1 but these are not capable of supporting 200V unsuppressed load dump.
    • LM74502-Q1 is capable of supporting 200V unsuppressed load dump but not capable of TVS less operation for ISO 7637-2 Pulse 1

     

  • Hi Sir,

    Thank you for your advice. It is so helpful to me.