LTC7103 Recommended for New Designs
The LTC7103 is a high efficiency, monolithic synchronous step-down DC/DC converter utilizing a constant frequency, average current mode control architecture...
Datasheet
LTC7103 on Analog.com

LTC3895 Recommended for New Designs
The LTC3895 is a high performance step-down switching regulator DC/DC controller that drives an all N-channel synchronous power MOSFET stage that can operate...
Datasheet
LTC3895 on Analog.com