MPQ2490

Industrial Grade, 1.5A, 36V, 700kHz

Step-Down Converter

with Programmable Output Current Limit

MPQ2490 Rev. 1.02

www.MonolithicPower.com

1

7/26/2013

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© 2013 MPS. All Rights Reserved.

DESCRIPTION

The MPQ2490 is a monolithic step-down switch

mode converter with programmable output

current limit. It achieves 1.5A continuous output

current over a wide input supply range with

excellent load and line regulation.

The

maximum

output

current

can

be

programmed by sensing current through the

inductor DC resistance (DCR) or an accurate

sense resistor.

Fault

condition

protection

includes

cycle-by-cycle

current

limiting

and

thermal

shutdown.

The MPQ2490 requires a minimum number of

readily available standard external components.

The MPQ2490 is available in

QFN (3x3mm)

package.

FEATURES

 Wide 4.5V to 36V Operating Input Range

 Programmable up to 1.5A Output Current

 Output Adjustable from 0.8V to 15V

 Programmable Output Current Limit without

power loss

 0.25Ω Internal Power MOSFET Switch

 Stable with Low ESR Output Ceramic

Capacitors

 95% Efficiency @ 500mA (Vo=5V)

 Fixed 700kHz Frequency

 Thermal Shutdown

 Cycle-by-Cycle Over Current Protection

 Available in QFN10 Package

APPLICATIONS



Industrial and Car Power Supplies



USB Power Supplies



Automotive Cigarette Lighter Adapters



Power Supply for Battery Chargers

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