** Shares of Semtech SMTC.O jumps 8.7% to $178.89 premarket

** The semiconductor company and cloud services provider posted Q1 adj. EPS of $0.51, beating est. $0.45, AMC on Tuesday

** Reported Q1 sales of $291 mln; analysts on average expected $283.45 mln, per LSEG-compiled data

** Expanding design wins in data center and LoRa businesses drove growth - SMTC

** At least six brokerages, including Stifel, Needham and Susquehanna, lift PTs on stock after results

** 14 out of 16 analysts rate stock "buy" or higher, two rate it "hold"; median PT at $175 - data compiled by LSEG

** As of last close, SMTC stock more than doubled YTD