This part is a kind of semiconductor called SD46520.

Function of this product has 400KHZ 2A STEP-DOWN DC-DC CONVERTER.

Manufacturers : Silan

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SD46520 400KHZ 2A STEP-DOWN DC-DC CONVERTER DESCRIPTION The SD46520 is a step-down PWM control converter with a built-in internal power MOSFET. It achieves 2A continuous output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. It provides cycle-by-cycle current limiting and thermal shutdown. In shutdown mode, the current is only 23μA. SOP-8-225-1.27 FEATURES * 2A output current * 0.2Ω internal power MOSFET * Stable with low ESR output ceramic capacitor * Up to 95% conversion efficiency * shutdown mode * 400kHz fixed frequency * Thermal shutdown * Cycle-by-cycle over current protection * 4.75－18V input voltage range * 1.22－16V output voltage range * Programmable und [ ... ]

SD46520 PDF Datasheet Download