The LTC3261EMSEPBF is a current-mode step-down DC/DC converter from Analog Devices. It is a 2.5V to 28V, 2.2A, 20VIN synchronous buck converter with integrated MOSFETs. It integrates a constant frequency, current mode, voltage mode, and pulse frequency modulation (PFM) control and uses synchronous rectification to reduce power losses. The device also has an adjustable soft-start, output overvoltage protection and comprehensive fault protection including over-current, undervoltage lockout, and thermal shutdown. It is housed in a 20-lead, low profile (2.00mm) 3mm x 3mm DFN package, making it an ideal choice for applications requiring high power density.