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Understanding UCC2813-X VCC Abs. Max Rating and UVLO

In the UCC2813-X datasheet, the VCC pin has an absolute maximum rating of 12V with a UVLO turn-on threshold of 12.5V for UCC2813-2 and UCC2813-4. The UVLO turn-on threshold can be higher than the maximum rating to protect the Zener diode. To power up the UCC2813-2/4 safely, the external voltage sour

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