The high-performance TPS56302 synchronous-buck regulator provides two supply voltages to power the core and I/O of digital signal processors. The TPS56302 is identical to the TPS56300 except that the reference voltages of the LDO and switching regulator have been reversed. The switching regulator, using hysteretic control with droop compensation, supports high current and efficiency for the I/O and other peripheral components. The LDO controller, suitable for powering the core voltage, drives an external N-channel power MOSFET and functions as an LDO regulator and as a power distribution switch.