The latest report, which cited a White House official, followed Trump's criticism on Thursday of the Fed's interest rate policy and the strong dollar, saying that it could hurt the U.S. economy..
Trump earlier told CNBC that a strong dollar put the United States at a disadvantage and he was ready to place tariffs on $500 billion of imported goods from China.
Analysts said the rise in the U.S. dollar this year was due in part to the president's growth-oriented policies, which have bolstered the Federal Reserve's case for raising rates.
The fiscal stimulus provided by tax reform is expected to lead to additional inflation and tighter labor markets, said Mazen Issa, senior FX strategist at TD Securities in New York.
"The Fed is responding to the inputs that have been provided," he said.
In afternoon trading, the dollar index was 0.77 percent weaker at 94.417, after hitting a one-year high of 95.62 in the previous session.
Trump's comments on trade pulled the Chinese yuan higher to 6.7784 per dollar in offshore trading. Over the last three months, the yuan has fallen nearly 8 percent against the U.S. dollar.
The People's Bank of China dropped the midpoint for a seventh straight trading day to 6.7671 per dollar on Friday, or 0.9 percent weaker than the previous fix of 6.7066.
Friday's fixing was the lowest since July 14, 2017, and represented the biggest one-day weakening in percentage terms since June 27, 2016.
A soft patch in the dollar, meanwhile, prompted some relatively high-yielding currencies to regain some balance.
Safe-haven currencies such as the Swiss franc also remain well supported, with the dollar down 0.69 percent at 0.9921 franc.
The Canadian dollar posted steep gains against the U.S. dollar following strong retail sales and inflation data, rising more than 1 percent to 1.3127 Canadian dollars.
The euro was also higher, up 0.7 percent at $1.1725.
(Reporting by James Thorne; Additional reporting by Gertrude Chavez-Dreyfuss; Editing by Chizu Nomiyama and Susan Thomas)
© Reuters News 2018