Exar XRP7725 Intel Node Manager Compatible Programmable Power Management System is a quad channel Digital Pulse Width Modulated (DPWM) Step down (buck) controller. A wide 4.75V to 5.5V and 5.5V 25V input voltage dual range allows for supply operation from standard power rails. With integrated FET gate drivers, two LDOs for standby power and a 105kHz to 1.23MHz independent channel to channel programmable constant operating frequency, the XRP772 reduces overall component count footprint and optimizes conversion efficiencies. A selectable digital Pulse Frequency Mode (DPFM) and low operating current result in better than 80% efficiency down to 10mA load provides support for portable and Energy Star compliant applications. Each XRP7725 channel is individually programmable a minimum 0.6V with a resolution and configurable for precise soft start and soft stop sequencing, including delay and ramp control. The XRP7725 operation is fully controlled an SMBus-compliant I2C interface allowing for advanced local and/or remote reconfiguration, full performance monitoring and reporting as well as fault handling. Built-in independent output over voltage, over temperature, over-current and under voltage lockout protections insure safe operation under abnormal operating conditions. The XRP7725 is offered in a RoHS compliant, "green"/halogen free 44-pin TQFN package.