This part is a kind of regulator LM317.

Function of this product has 3-Terminal Adjustable Regulator

Package : SOIC 8, TO-92, SOT-89, TSSOP 8 Pin Type

Manufacturers : Texas Instruments

Image and pinout :

Some of the text within the PDF file :

The LM317 device is an adjustable three-terminal positive-voltage regulator capable of supplying more than 1.5 A over an output-voltage range of 1.25 V to 37 V. It requires only two external resistors to set the output voltage. The device features a typical line regulation of 0.01% and typical load regulation of 0.1%. It includes current limiting, thermal overload protection, and safe operating area protection. Overload protection remains functional even if the ADJUST terminal is disconnected.

Features:

Output voltage range adjustable

from 1.25 V to 37 V

Output current greater than 1.5 A

Internal short-circuit current limiting

Thermal overload protection

Output safe-area compensation

Applications: 

ATCA solutions

DLP: 3D biometrics, hyperspectral imaging, optical networking, and spectroscopy

DVR and DVS

Desktop PCs

Digital signage and still cameras

ECG electrocardiograms

EV HEV chargers: levels 1, 2, and 3

Electronic shelf labels

Energy harvesting

Ethernet switches

Femto base stations

Fingerprint and iris biometrics

[ ... ]

 

LM317 PDF Datasheet Download