Power Electronics — question 1 of 10
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The input rail already has low ripple; the concern is the sensor's sensitivity to noise on its supply.
You need to power a low-noise analog sensor front-end that draws about 50 mA, stepping a quiet 5V rail down to 3.3V. Would you reach for an LDO or a synchronous buck converter here, and why does that choice matter for this specific load?