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LT3840 minimum output current

Question asked by Skip34 on Aug 8, 2018
Latest reply on Aug 10, 2018 by dkb

What is the minimum output current the LT3840 can regulate with a 2m ohm sense resistor?  From the current regulation specs in the datasheet I see that the avg current limit sense voltage can vary up to +/- 2.5mV from typical.  I assume this is due to cumulative error in the current sense and gm amplifier path.  Does this imply that for accurate current control the differential input voltage range should be in the range of 2.5mV to 47.5mv or (1.25A to 23.75A)?   

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