The LTC3851AHMSE-1#TRPBF is an integrated switching regulator controller from Analog Devices. It includes an on-board MOSFET driver, allowing for operation with a low component count. The device offers a wide input voltage range of 4V to 38V, allowing it to be used with a wide variety of power sources. It features an output voltage adjustable from 0.8V to VIN, as well as programmable current limits. Additionally, the device can be configured to support a variety of topologies such as SEPIC, buck, boost, and flyback. It also has built-in protection against overvoltage, overcurrent, and overtemperature.