LM5119: LM5119 Operation of the current limit when hiccup is disabled

David C

Part Number: LM5119

Hello,

When hiccup is disabled and the part is in current limit, will the part continue to operate in current limit indefinitely as long as the load is sufficient?

Regards,

David

over 6 years ago

0 Qian Chen over 6 years ago

TI__Mastermind 24075 points

Hello,

Just curiuos, how can you disable hiccup?

Thanks
Qian

0 David C over 6 years ago in reply to Qian Chen

TI__Expert 3350 points

If the RES pin is tied to VCC at initial power on, hiccup current limit is disabled

0 Qian Chen over 6 years ago in reply to David C

TI__Mastermind 24075 points

Sorry, I did not notice this information on datasheet.

If hiccup is disabled, the part will do cycle by cycle curent limit infinitely. As a result, Vout will drops.

Thanks
Qian

Power management

Power management forum

LM5119: LM5119 Operation of the current limit when hiccup is disabled