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LM5165: Behaviour when Input Current Limit is reached

KrnB
Intellectual 630 points
Part Number: LM5165

Tool/software:

Hello,

I set Input current limit as 180mA typical through ILIM pin. Please help to answer below -

  • During startup condition, if the Input current reaches this limit. Will LM5165 be prevented from starting up ? or Will the LM5165 startup time will increase ? 
  • During active condition, if the Input current reaches this limit. I assume that LM5165 setpoint voltage drops but it does not initiate overcurrent protection  or hiccup mode. Is this correct ?
  • 0
    TI__Guru 59001 points

    Hello KrnB 

    There is no input current limiting function. I think you are talking about  high-side peak current limit

    If the peak current limit is reached at no load start-up condition, the start-up time will be increased. If the peak current limit is reached due to heavy load conditions during start-up, then the start-up will be failed. 

    The device doesn't have a hiccup mode protection function. 

    -EL