LTM4644 second opinion about the COMP Pin function

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mayang

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Hi in the LTM4644 (https://www.analog.com/media/en/technical-documentation/data-sheets/LTM4644-4644-1.pdf), page 7 its says that " COMP is Current Control Threshold and Error Amplifier Compensation Point of Each Switching Mode Regulator Channel. The internal current comparator threshold is proportional to this voltage. Tie the COMP pins togetherfor parallel operation. The device is internally compensated." But not stated if I can float or mark as unconnected if not in use.

Should I leave it float or should I mark as Unconnected?

Thank you.
 

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KlausST said:
Hi,

Datasheet, Typical application, Fig33: 4 individual regulators.

Klaus
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Hi,

okay leave this float.

Thanks
--- Updated ---

KlausST said:
Hi,

Datasheet, Typical application, Fig33: 4 individual regulators.

Klaus
Click to expand...
Hi,

What about the CLKIN, CLKOUT, and TEMP, can I leave it float or should I mark is as Unconnected sir?

Many thanks.

Jess
 
Last edited:

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Hi,

my pedantic view (not for you only, but also all others reading this thread)
(not meant rude nor offensive. Just explaining the difference)

Basically you leave it unconnected, but not floating, because it is (weakly) driven internally.

Examples:
* an unconnected true input is "floating". Means the voltage at this node is not known. It may be HIGH, or LOW, or something inbetween.
* an unconnected input with enabled internal pullup is not floating, it is HIGH.
* there also are pull downs, or bus keepers to prevent (unconnected or connected) pins from floating

Klaus
 
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