MPQ2123 Synchronous Buck Converters Monolithic Power Systems (MPS) MPQ2123 Synchronous Buck Converters are step-down converters with configurable frequency (300kHz to 2.2MHz). These converters operate from a 2.7V to 6V input voltage range and can generate an output voltage as low as 0.606V. The MPQ2123 synchronous buck converters can achieve up to 2A continuous output current with peak current control for excellent transient response and efficiency. These converters feature a 45μA quiescent current, low shutdown current, remote Enable (EN) control, Power Good (PG) indicator, thermal shutdown, and external Soft Start (SS).