MP2147

Constant On-Time

Synchronous, Step-Down Switcher

MP2147 Rev. 1.1

www.MonolithicPower.com

1

6/8/2016

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© 2016 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2147 is a monolithic, step-down, switch-

mode converter with internal power MOSFETs. It

can achieve up to 4A continuous output current

from a 2.8V-to-5.5V input voltage with excellent

load and line regulation. The output voltage can

be regulated to as low as 0.6V.

Constant-on-time control provides a fast transient

response and eases loop stabilization. Fault

condition

protections

include

cycle-by-cycle

current limiting and thermal shutdown.

The MP2147 is available in a small QFN2×3mm

package and requires only a minimal number of

readily-available, standard, external components.

The MP2147 is ideal for a wide range of

applications, including storage (SSD, HDD), high-

performance DSPs, FPGAs, and distributed

power systems.

FEATURES

 Up to 4A Output Current

 Wide 2.8V-to-5.5V Operating Input Range

 22mΩ and 14mΩ Internal Power MOSFETs

 40µA Quiescent Current

 1.2MHz Fixed Switching Frequency

 1% Feedback Accuracy

 External Mode Control

 External VCON Control

 Adjustable Output from 0.6V

 1.5ms Internal SS Time with Pre-Bias Startup

 Cycle-by-Cycle Over Current Protection

 Short Circuit Protection with Hiccup Mode

 Stable with Low-ESR Output Ceramic

Capacitors

 Thermal Shutdown

 Available in a 2mm×3mm QFN Package

 Output Discharge Function

APPLICATIONS

 Storage (SSD, HDD)

 Portable Instruments

 Battery-Powered Devices

All MPS parts are lead-free, halogen 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

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