MP2166

6V, Dual 2A/2A or 3A/1A,

Low Quiescent Current,

Synchronous Buck with PG and SS

MP2166 Rev. 1.0

www.MonolithicPower.com

1

3/14/2017

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DESCRIPTION

The MP2166 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 MP2166

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 MP2166 integrates dual, 55

mΩ, high-side

switches and 20mΩ synchronous rectifiers for

high efficiency without an external Schottky

diode. The MP2166 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 MP2166 requires a minimum number of

readily available, standard, external components

and is available in QFN-18 (2mmx3mm) and

QFN-18 (2.5mmx3.5mm) packages.

FEATURES

 2.7V to 6V Operating Input Range

 2A/2A or 3A/1A Continuous Current

 55mΩ/20mΩ R

DS(ON)

 Programmed Frequency up to 3MHz

 External Sync Clock Up to 3MHz

 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

APPLICATIONS

 Small/Handheld Devices

 DVD Drivers

 Smartphones and Feature Phones

 Battery-Powered Devices

 Portable Instruments

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.