This part is a kind of semiconductor called AX6611.
Function of this product has 5A Ultra Low Dropout Linear Regulator.
Manufacturers : AXElite
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AX6611 5A Ultra Low Dropout Linear Regulator GENERAL DESCRIPTION The AX6611 is a 5A ultra low dropout linear regulator. This product is specifically designed to provide well supply voltage for front-side-bus termination on motherboards and NB applications. The IC needs two supply voltages, a control voltage for the circuitry and a main supply voltage for power conversion, to reduce power dissipation and provide extremely low dropout. The AX6611 integrates many functions. A Power-On-Reset (POR) circuit monitors both supply voltages to prevent wrong operations. A thermal shutdown and current limit functions protect the device against thermal and current over-loads. A POK indicates the output status with time delay which is set internally. It can control other converter for power sequenc [ ... ]