DESCRIPTION

The MP4569 is a step-down switching regulator with integrated high-side/low-side, high-voltage power MOSFETs. It provides a highly efficient output of up to 0.3A.

The wide 4.5V to 75V input range accommodates a variety of step-down applications in automotive environment. A 3.5μA shutdown mode quiescent current is good for battery-powered applications.

It allows for high power conversion efficiency over a wide load range by scaling down the switching frequency under light-load condition to reduce the switching and gate driver losses. 

The switching frequency during start-up and short circuit also can be scaled down to prevent inductor current runaway. Thermal shutdown provides reliable, fault-tolerant operation.

The MP4569 is available in QFN-10 (3mmx3mm) and SOIC-8 EP packages.

FEATURES

20μA Quiescent Current (Active mode)

Wide 4.5V to 75V Operating Input Range

1.2Ω/0.45Ω Internal Power MOSFETs

Programmable Soft-Start

FB-Tolerance: 1% at Room Temperature; 2% at Full Temperature.

Adjustable Output

1V Reference Voltage Output for QFN Package

Low Shutdown Mode Current: 3.5μA

Available in QFN-10 (3mmx3mm) and SOIC-8 EP Packages

APPLICATIONS

Automotive Systems

Industrial Power Systems

Distributed Power Systems

Battery Powered Systems

TYPICAL APPLICATION