In summary, the LTC3851 is a high performance synchronous step-down switching regulator controller that drives an all N-channel synchronous power MOSFET stage. It features a constant frequency current mode architecture, which allows a phase-lockable frequency of up to 750kHz. OPTI-LOOP® compensation allows optimization of the transient response over a wide range of output capacitances and ESR values. The LTC3851 features a precision 0.8V reference compatible with a wide input supply range. The LTC3851-1 has a power good output signal instead of an adjustable current limit.

