MP4573
DESCRIPTION
The MP4573 is a fully integrated, fixedfrequency, synchronous step-down converter. It can achieve up to 2.5A 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 automotive input environments. The device’s 2μA shutdown current also makes it ideal for battery-powered applications.
The MP4573’s integrated internal high-side and low-side power MOSFETs (HS-FET and LS-FET, respectively) provide high efficiency without the need for an external Schottky diode. Advanced asynchronous modulation (AAM) mode achieves high efficiency under light-load conditions by scaling down the frequency to reduce switching and gate driver losses.
Features include built-in soft start (SS), enable (EN) control, and power good (PG) indication. High duty cycle and low-dropout (LDO) mode enable the device to withstand automotive cold crank conditions.
The MP4573 employs...
