There is a Tape & Reel (TR) package attached to it. The 48-VFQFN Exposed Pad package is available to save space. Surface Mount tells us how to mount it. A temperature of -40°C~85°C TA should be maintained when the device is functioning.
ISL68137IRBZT7AR5781 Features
48-VFQFN Exposed Pad package Mounting type of Surface Mount
ISL68137IRBZT7AR5781 Applications
There are a lot of Renesas Electronics America Inc. ISL68137IRBZT7AR5781 Power Supply Control ICs applications.