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LMR33620: Short circuit protection function of LMR33620 is abnormal

Part Number: LMR33620

Abnormal short circuit protection function of LMR33620;The inductance is 4A 33uH;Input 12V, output 5V, when 5V short circuit occurs, the chip burns down, output 12V voltage;Multi-meter test VIN pin and SW pin to generate short cir cuit;I hope you can help me analyze the reasons.