MP4572

High-Efficiency, 2A, 60V, Fully Integrated

Synchronous Buck Converter

MP4572 Rev. 1.0

www.MonolithicPower.com

1

3/9/2020

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© 2020 MPS. All Rights Reserved.

DESCRIPTION

The MP4572

is

a fully

integrated,

fixed-

frequency, 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

accommodates

a

variety

of

step-down

applications in an automotive input environment.

A 2

μA 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 over-

current protection with valley current detection,

which helps prevent current runaway. It also has

hiccup short-circuit protection (SCP), input under-

voltage

lockout

(UVLO),

and

auto-recovery

thermal protection.

With internal compensation, the MP4572 offers

a very compact solution with a minimal number of

readily available standard external components. It

is available in a QFN-12 (2.5mmx3mm) package.

FEATURES

 Wide 4.5V to 60V Operating Input Range

 2A Continuous Output Current

 High-Efficiency Synchronous Mode Control

 250mΩ/45mΩ Internal Power MOSFETs

 Configurable Frequency Up to 2.2MHz

 180° Out-of-Phase SYNCO Clock

 40μA Quiescent Current

 Low Shutdown Mode Current: 2μA

 FB Tolerance: 1% at Room Temp, 2% at

Full Temp

 Selectable AAM or Forced CCM Operation

at Light Load

 Internal 0.45ms Soft Start

 Remote EN Control

 Power Good (PG) Indicator

 Low-Dropout Mode

 Over-Current Protection (OCP)

 Short-Circuit Protection with Hiccup Mode

 V

IN Under-Voltage Lockout (UVLO)

 Thermal Shutdown

 Available in a QFN-12 (2.5mmx3mm)

Package

APPLICATIONS

 Automotive Infotainment

 Automotive Lamps and LEDs

 Automotive Motor Control

 Industrial Power Systems

All MPS parts are lead-free, halogen-free, and adhere to the RoHS

directive. For MPS green status, please visit the MPS website under

Quality Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are

trademarks of Monolithic Power Systems, Inc. or its subsidiaries.