MP9942

High Efficiency 2A, 36V, 410kHz

Synchronous Step-Down Converter

with Power Good

MP9942 Rev.1.1

www.MonolithicPower.com

1

8/7/2017

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© 2017 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP9942 is a high-frequency, synchronous,

rectified, step-down, switch-mode converter

with built-in power MOSFETs. It offers a very

compact solution to achieve a 2A continuous

output current with excellent load and line

regulation over a wide input supply range. The

MP9942 has synchronous mode operation for

higher efficiency over the output current load

range.

Current-mode operation provides fast transient

response and eases loop stabilization.

Full protection features include over-current

protection and thermal shutdown.

The MP9942 requires a minimal number of

readily-available standard external components,

and is available in a space-saving 8-pin

TSOT23 package.

FEATURES

 Wide 4V to 36V Continuous Operating Input

Range

 90mΩ/55mΩ Low RDS(ON) Internal Power

MOSFETs

 High-Efficiency Synchronous Mode

Operation

 410kHz Switching Frequency

 Synchronizes from 200kHz to 2.2MHz

External Clock

 High Duty Cycle for Automotive Cold-crank

 Internal Power-Save Mode

 Internal Soft-Start

 Power Good Indicator

 Over-Current Protection with Hiccup

 Thermal Shutdown

 Output Adjustable from 0.8V

 Available in an 8-pin TSOT-23 package

APPLICATIONS

 Automotive

 Industrial Control System

 Distributed Power Systems

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

status, please visit MPS website under Quality Assurance. “MPS” and “The

Future of Analog IC Technology” are Registered Trademarks of Monolithic

Power Systems, Inc.

TYPICAL APPLICATION