Analog Devices MAX77542 Quad-Phase High-Efficiency Buck Converters employs an adaptive constant on-time (COT) current-mode control scheme and a flexible architecture that supports five phase configurations. The MAX77542 has a wide input-voltage range that allows a direct conversion for less than 1V outputs from 1- to 3-cell Li+ batteries and USB power delivery (PD) supply rails. The output voltages are preset with resistors and are further adjustable through an I2C-compatible interface.