This part is a kind of semiconductor called APL5912.

Function of this product has 0.8V Reference Ultra Low Dropout Linear Regulator.

Manufacturers : Anpec Electronics

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APL5912 0.8V Reference Ultra Low Dropout (0.2V@5A) Linear Regulator Features • • General Description The APL5912 is a 5A ultra low dropout linear regulator. This product is specifically designed to provide well supply voltage for front-side-bus termination on motherboard and NB applications. The IC needs two supply voltages, a control voltage for the circuitry and a main supply volatege for power conversion, to reduce power dissipation and provide extremely low dropout. The APL5912 integrates many functions. A Power-OnReset (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 in [ ... ]

APL5912 PDF Datasheet Download