This part is a kind of semiconductor called MIC29302.

Function of this product has (MIC29xxx) High-Current Low-Dropout Regulators.

Manufacturers : Micrel

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MIC29150/29300/29500/29750 High-Current Low-Dropout Regulators General Description The MIC29150/29300/29500/29750 are high current, high accuracy, low-dropout voltage regulators. Using Micrel's proprietary Super βeta PNP® process with a PNP pass element, these regulators feature 350mV to 425mV (full load) typical dropout voltages and very low ground current. Designed for high current loads, these devices also find applications in lower current, extremely low dropout-critical systems, where their tiny dropout voltage and ground current values are important attributes. The MIC29150/29300/29500/29750 are fully protected against overcurrent faults, reversed input polarity, reversed lead insertion, overtemperature operation, and positive and negative transient voltage spikes. Five pin fixed [ ... ]

MIC29302 PDF Datasheet Download