MP4576 Synchronous Buck Converters Monolithic Power Systems (MPS) MP4576 Synchronous Buck Converters are fully integrated, fixed-frequency, and step-down converters. These converters operate at 4.5V to 60V input supply voltage range and can achieve up to 600mA continuous output current with peak current control. The MP4576 synchronous buck converters also achieve load and line regulation across the -40°C to 125°C ambient temperature range. These converters feature 40μA quiescent current in standby mode, clock SYNC output, built-in internal soft-start, hiccup Over-Current Protection (OCP), and hiccup Short-Circuit Protection (SCP).