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Suggest dc-dc IC for power LED application

HELLO TEAM ,

Greetings!!!

We are looking for constant current led driver which must have following specification:

Input voltage range : 22 to 25 volt dc

Output voltage : 5W to 15W with constant current 350mA ( buck as well as boost

Efficiency : 85% to 90%

Dimmable with Microprocessor Please suggest me corresponding IC and design resource available.

Regards Rahul