Download MP4572GQB Datasheet PDF
Monolithic Power Systems
MP4572GQB
DESCRIPTION The MP4572 is a fully integrated, fixedfrequency, synchronous step-down converter. It can achieve up to 2A of continuous output current with peak current control for excellent transient response. The wide 4.5V to 60V input voltage range acmodates a variety of step-down applications in an automotive input environment. A 2μA shutdown mode quiescent current makes the MP4572 ideal for battery-powered applications. The MP4572 integrates internal high-side and low-side power MOSFETs for high efficiency without an external Schottky diode. The device employs advanced asynchronous modulation (AAM), which achieves high efficiency during light load by scaling down the frequency to reduce the switching and gate driver losses. Standard protection features include built-in soft start, enable control, and a power good indicator. High duty cycle and low-dropout mode are provided for automotive cold crank conditions. In addition, the chip provides overcurrent protection with valley current...