The TPS62087RLTT is a fixed-output 1.8 V synchronous buck converter from TI's DCS-Control family, rated for 3 A continuous output in a 7-VSON package that measures just 2x2 mm. That power density — 3 A from a package with a 0.50 mm pitch and an exposed thermal pad — is the headline number.
Input range and temperature grade
The fixed 1.8 V output is set internally; no feedback divider needed, which saves two resistors and one node on the layout.
The base product number TPS62087 covers a family of fixed-output voltage options; if the 1.8 V output is not what the BOM calls for, a different suffix in the same package and pinout may fit without a layout change.