MP4569

75V, 0.3A Synchronous

Step-Down Converter

MP4569 Rev. 1.0

www.MonolithicPower.com

1

9/12/2014

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The Future of Analog IC Technology

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

All MPS parts are lead-free and adhere to the RoHS directive. For MPS green

status, please visit MPS website under Products, Quality Assurance page.

“MPS” and “The Future of Analog IC Technology” are registered trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION