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LT3474 SHDN pin control

Hi, I want to use MCU pin to control SHDN pin of LT3474.

As in the datasheet, I see the LT3474 doesn't have the internal pull down resistor so I must to use external resistor to pull down on the SHDN line, right?

This is a discussion with my colleague and he doesn't want to use external resistor. Please let me know what is correct.