Hello
Is it acceptable to connect the open-drain nUVOVF output to the ENABLE pin (pin 9) via a 51kΩ resistor, if the ENABLE pin is driven directly by a microcontroller GPIO?

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MAX17613B
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The Olympus series of ICs is the industry's smallest and most robust integrated system protection solution. The MAX17613A/MAX17613B/MAX17613C adjustable...
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MAX17613B on Analog.com
Hello
Is it acceptable to connect the open-drain nUVOVF output to the ENABLE pin (pin 9) via a 51kΩ resistor, if the ENABLE pin is driven directly by a microcontroller GPIO?

Nothing wrong with the connection, just that I would not advise that, as this might conflict with the the Microcontroller's GPIO, and thereby defeat the purpose of UVOVF. Since UVOVF is an open-drain active low flag, except the GPIO is an open-drain, that way EN can be pulled low, and set-up would be acting ORly.