This part is a kind of semiconductor called LM2950.

Function of this product has 100mA LOW DROPOUT VOLTAGE REGULATORS.

Manufacturers : HTC

Image and pinout :

Some of the text within the PDF file :

100mA LOW DROPOUT VOLTAGE REGULATORS LM2950/1 FEATURES ● High accuracy output voltage ● Guaranteed 100 mA output ● Very low quiescent current ● Extremely tight load and line regulation ● Very low temperature coefficient ● Current and thermal limiting ● Low dropout voltage ● Need only 1uF for stability ● Error flag warns of output dropout ● Logi-control electronic shutdown ● Output programmable from 1.24 to 29V ● Moisture Sensitivity Level 3 Applications ● High-efficiency linear regulator, voltage reference ● Battery powered systems ● Portable consumer equipment ● Portable / Parm, Desktop / Notebook computers ● Portable Instrumentation, cordless telephones ● Automotive Electronics, Radio control systems ● SMPS Post-Regulator, Avionics TO- 92 PKG SOP- [ ... ]

LM2950 PDF Datasheet Download