This part is a kind of semiconductor called SY8105.

Function of this product has Synchronous Step Down Regulator.

Manufacturers : Silergy

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Applications Note:AN_SY8105 High Efficiency, 500kHz, 5A, 18V Input Synchronous Step Down Regulator General Description The SY8105 is a high efficiency 500 kHz synchronous step-down DC-DC converter capable of delivering 5.0A current. The SY8105 operates over a wide input voltage range from 4.5V to 18V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. Low output voltage ripple and small external inductor and capacitor sizes are achieved with 500 kHz switching frequency. It adopts the instant PWM architecture to achieve fast transient responses for high step down applications Ordering Information SY8105 □(□□)□ Temperature Code Package Code Optional Spec Code Ordering Number Package type Note SY8105ADC TSOT23-6 -- Feature [ ... ]

SY8105 PDF Datasheet Download