New Product Introduction

Monolithic Power Systems (MPS) - MPQ2166

MPS MPQ2166 - 6V, dual 2A/2A or 3A/1A, low quiescent current, synchronous buck with PG and SS, AEC-Q100 qualified

MPS MOQ2166 component visualization

The MPQ2166 is an internally compensated, dual, PWM, synchronous, step-down regulator that operates from a 2.7V to 6V input and generates an output voltage as low as 0.6V. The MPQ2166 can be configured as a 2A/2A or 3A/1A output current regulator and is ideal for powering portable equipment that runs on a single-cell lithium-ion (Li+) battery due to a low 60µA quiescent current.

The MPQ2166 integrates dual, 55mΩ, high-side switches and 20mΩ synchronous rectifiers for high efficiency without an external Schottky diode. The MPQ2166 has peak-current-mode control and internal compensation and is capable of low dropout configurations. Both channels can operate at 100% duty cycle.

Full protection features include cycle-by-cycle current limit and thermal shutdown.

The MPQ2166 requires a minimum number of readily available, standard, external components and is available in QFN-18 (2mmx3mm) and QFN-18 (2.5mmx3.5mm) packages.


  • 2.7V to 6V Operating Input Range
  • 2A/2A or 3A/1A Continuous Current 
  • 55mΩ/20mΩ RDS(ON)
  • Programmed Frequency up to 3MHz
  • External Sync Clock Up to 3MHz
  • 180o Phase Shifted Operation
  • PG Indicators
  • External SS and Track
  • Adjustable Advanced Asynchronous Mode (AAM) or Forced Continuous Conduction Mode (CCM)
  • Peak Efficiency >90%  
  • Output Adjustable from 0.6V to VIN 
  • 100% Duty Cycle Operation
  • 60µA Quiescent Current
  • Cycle-by-Cycle Over-Current Protection (OCP)
  • Short-Circuit Protection (SCP) with Hiccup Mode and Valley Current Detection
  • Thermal Shutdown
  • Available in QFN-18 (2mmx3mm) and QFN-18 (2.5mmx3.5mm) Packages
  • Available in AEC-Q100 Grade-1


  • Small/Handheld Devices
  • DVD Drivers
  • Smartphones and Feature Phones
  • Battery-Powered Devices
  • Portable Instrument

Application example

MPS MPQ2166 application example

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