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LM2675 DIP, NC pins connection and power/heath dissipation...

Other Parts Discussed in Thread: LM2675

Hello,

In order to improve heath dissipation, I'll be grateful to know if the suggested PCB layout reported in the LM2675 datasheet, page 25, sect. 11.2, is also applicabile to the LM2675N-5.0 DIP version.
Furtherly, pins description table at page 3 reports pins 2 and 3 as "No connect pins". No problem to tie those terminals to ground also in DIP version?

Thank you in advance,

Federico