MPQ2122

6V, 2A, Low Quiescent Current

Dual, SYNC Buck Regulator

MPQ2122 Rev. 1.0

www.MonolithicPower.com

1

3/2/2016

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© 2016 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MPQ2122 is an internally-compensated,

1MHz fixed-frequency, dual PWM, synchronous,

step-down regulator. The MPQ2122 operates

from a 2.7V-to-6V input, generates an output

voltage as low as 0.608V, and has a 45µA

quiescent current that makes it ideal for

powering portable equipment that runs on a

single cell lithium-ion (Li+) battery.

The MPQ2122 integrates dual 80mΩ high-side

switches and 35mΩ synchronous rectifiers for

high efficiency without an external Schottky

diode. Peak-current mode control and internal

compensation limits the minimum number of

readily-available external components.

Fault-condition protections include cycle-by-cycle

current limiting and thermal shutdown.

The MPQ2122 is available in an 8-pin TSOT23-8

package.

FEATURES

• Dual 2A-Output Current

• >93% Peak Efficiency

• >80% Light-Load Efficiency

• Wide 2.7V-to-6V Operating Input Range

• 80mΩ and 35mΩ Internal Power MOSFET

• 1MHz Fixed Switching Frequency

• Adjustable Output from 0.608V to VIN

• 180° Phase-Shifted Operation

• 100% Duty-Cycle Operation

• 45µA Quiescent Current

• Cycle-by-Cycle Over-Current Protection

• Short-Circuit Protection with Hiccup Mode

• Thermal Shutdown

• Available in an 8-pin TSOT23-8 Package

APPLICATIONS

• Small/Handhold Devices

• DVD Drivers

• Portable Instruments

• Smartphones and Feature Phones

• 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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