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Request the schematic review of LTC3638


My customer is using LTC3638 in their product which is the LED light circuit in pteain passenger car.

But they have some issue that sometimes LTC3638 or  Capacitor  in around circuit is damaged.

So they need your advices abou their schematic first.

Please refer their schematic and let me know your any advices about above damage issues.

( Finally it seems that F1(huse) is open, ZD1 (Zener diode)  is short, C16 (Capacitor) or U2 (LTC3638) is damaged.)

Q1) Would you suggest any opinions about the reason why LTC3638 or Capacitor in C16 is damaged?

Q2) Would let me know your advices about thrie schematic ?



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[edited by: Se-woong at 5:00 PM (GMT -5) on 28 Nov 2020]