This document describes a continuous (more than 5A pulsed) step-down switching regulator with synchronous rectification. Its features include: 4A output current (more than 5A pulsed), operating input voltage from 2.9V to 18V, external 1.8V ± 2% reference voltage, output voltage from 0.6V to input voltage, MLCC compatible, 200ns TON, programmable UVLO matching 3.3V, 5V and 12V bus, FSW programmable up to 1MHz, voltage feed-forward, zero-load current operation, programmable current limit on both switches, programmable sink current capability, pre-bias start up capability, thermal shutdown, etc.