The STMicroelectronics LD2985AM28R is a linear voltage regulator with a fixed 2.8V output and a 150mA current capability. It is supplied in a surface-mount SOT-23-5 package.
The STMicroelectronics LD2985AM30R is a linear voltage regulator with a fixed positive output. It provides 150 µA of current and operates from a 16V input.