POWER OF ATTORNEY

The undersigned, Paul V. Walsh, Jr., hereby constitutes and appoints Emeka
Chukwu  and Charles B. Ammann and each of them, jointly and severally, his
lawful attorney-in-fact and agent, with full power of substitution and
resubstitution, for him and in his name, place and stead, in any and all
capacities, to execute and file with the Securities and Exchange Commission
and any stock exchange or similar authority (or any other governmental or
regulatory authority) Forms ID, 3, 4 and 5 under Section 16(a) of the
Securities Exchange Act of 1934, as amended (the "Act") and the rules
thereunder, or any other appropriate form, and all amendments thereto with
all exhibits and any and all documents required to be filed with respect
thereto, relating to his holdings or beneficial ownership of securities
issued by Semtech Corporation, a corporation organized under the laws of
the State of Delaware (the "Corporation"), granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to
do and perform each and every act and thing requisite or necessary to be
done as fully to all intents and purposes as he might or could do in
person, hereby ratifying and confirming all that said attorneys-in-fact and
agents, and each of them, or his or her substitute or substitutes, may do
or lawfully cause to be done by virtue hereof.
The undersigned acknowledges that the foregoing attorneys-in-fact and
agents, solely by virtue of serving in such capacity at the request of the
undersigned, are not assuming, nor is the Corporation assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Act.
This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms ID, 3, 4 and 5 with respect
to the undersigned's holdings or beneficial ownership of and transactions
in securities issued by the Corporation, unless earlier revoked by the
undersigned in a writing delivered to the foregoing attorneys-in- fact.
/s/Paul V. Walsh Jr.
		April 10, 2023
Paul V. Walsh, Jr.