This part is a kind of semiconductor called XC6228.

Function of this product has 300mA High Speed LDO Regulator.

Manufacturers : Torex Semiconductor

Image and pinout :

Some of the text within the PDF file :

XC6228 Tel: 0755-29004755 , Email: weiye0755@163.com Series Mobilephone : 15107552758 300mA High Speed LDO Regulator with ON/OFF Switch ETR0360-002 Tel: 0755-29004755 , Email: weiye0755@163.com GENERAL DESCRIPTION Mobilephone : 15107552758 The XC6228 series is a high speed LDO regulator that features high accurate, low noise, high ripple rejection, low dropout and low power consumption. The series consists of a voltage reference, an error amplifier, a driver transistor, a current limiter, a phase compensation circuit. The CE function enables the circuit to be in stand-by mode by inputting low level signal. In the stand-by mode, the series enables the electric charge at the output capacitor CL to be discharged via the internal switch, and as a result the VOUT pin quickly returns to the VS [ ... ]

XC6228 PDF Datasheet Download