The seller might not be around anymore but look that chip up on Amazon. “Max 7705”, I had to buy one a while back and there was only one seller that I found on Amazon.

Maybe you can use this link to find one like yours:

MAX77843 POWER IC for Samsung GALAXY NOTE 4 / SAMSUNG GALAXY S6 https://www.amazon.com/dp/B076GKC5YB/ref=cm_sw_r_cp_api_i_R3AQWJTVCT02E67A0K81?_encoding=UTF8&psc=1