MPQ2451-5/33-AEC1

36V, 2.2MHz, 0.6A, Step-Down Converter

AEC-Q100 Qualified

MPQ2451-5/33 Rev 1.0

www.MonolithicPower.com

1

5/25/2016

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© 2016 MPS. All Rights Reserved.

DESCRIPTION

The MPQ2451-5/33 is a high-frequency, step-

down, switching regulator with an integrated,

high-voltage,

high-side

power

MOSFET.

It

efficiently outputs up to 0.6A, with current-mode

control for fast loop response.

The wide 3.3V-to-36V input range accommodates

a variety of automotive step-down applications,

and the 3

μA shutdown-mode quiescent current

allows use in battery-powered applications.

The

MPQ2451-5/33

achieves

high

power-

conversion efficiency over a wide load range by

scaling down the switching frequency under

light-load conditions to reduce switching and

gate driving losses.

Frequency fold-back prevents inductor current

runaway during start-up. Thermal shutdown

provides reliable, fault-tolerant operation.

The MPQ2451-5/33 is available in cost-effective

SOT23-6L and QFN-6L packages.

FEATURES

 Guaranteed Industrial/Automotive Temp.

Ranges

 130μA Operating Quiescent Current

 Wide 3.3V-to-36V Operating Input Range

 500mΩ Internal Power MOSFET

 2.2MHz Fixed Switching Frequency

 Internally Compensated

 Stable with Ceramic Output Capacitors

 Internal Soft-Start

 Precision Current Limit Without Current

Sensing Resistor

 >90% Efficiency

 Fixed 5V & 3.3V Outputs

 6-Lead SOT23 and QFN Packages

 Available in AEC-Q100 Grade 1

APPLICATIONS

 High-Voltage Power Conversion, Including

o

Automotive Systems

o

Industrial Power Systems

o

Distributed Power Systems

o

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