This part is a kind of semiconductor called RT8292A.

Function of this product has 340kHz Synchronous Step-Down Converter.

Manufacturers : Richtek

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RT8292A 2A, 23V, 340kHz Synchronous Step-Down Converter General Description The RT8292A is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 2A output current from a 4.5V to 23V input supply. The RT8292A's current mode architecture and external compensation allow the transient response to be optimized over a wide range of loads and output capacitors. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. The RT8292A also provides under voltage protection and thermal shutdown prptection. The low current (<3μA) shutdown mode provides output disconnection, enabling easy power management in battery-powered systems. The RT8292A is available in an SOP-8 (Exposed Pad) package [ ... ]

RT8292A PDF Datasheet Download