A quarter of a century of increasing dividends is a hell of a way to generate some passive income. Enter Dividend Aristocrats.These companies have kept increasing their dividends for at least 25 consecutive years, even during economic downturns, the recession, and the recent pandemic, and they show signs of strength today amidst all the trade-war uncertainties.We analyzed five prominent names in an underrated sector to see which one stands out the most. The winner: Medtronic (NYSE: MDT).Why the healthcare s ...