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TPS50601-SP: SYNC Pin pull down resistor

Part Number: TPS50601-SP

Hello,

In the datasheet, you request a 10k pull-down resistor for synchronization with an external clock. Is it ok to use a resistor of lower value (e.g. 1k) ? My external clock will start with a weak pull-up of 10k during 50ms and I would like it not to be seen at start-up and start on internal clock. That is why I would like to use a 1k pull down.

KR,

Thibaut