MP2187

Dual 3A, 5.5V, 1.2MHz, COT

Synchronous Step-Down Switcher

MP2187 Rev. 1.0

www.MonolithicPower.com

1

12/12/2014

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© 2014 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2187 is a monolithic, step-down, switch-

mode dual converter with internal power

MOSFETs. It can achieve up to 3A continuous

output current from a 2.5V–to-5.5V input

voltage with excellent load and line regulation.

The output voltages of two channels are 1.1V

and 1.8V respectively.

The constant-on-time control scheme provides

fast transient response and eases loop

stabilization. Fault condition protections include

cycle-by-cycle current limiting, input voltage

failure indicator and thermal shutdown.

The

MP2187

is

available

in

small

2.2mmx2.6mm QFN16 package and requires

only a minimal number of readily available

standard external components.

The MP2187 is ideal for a wide range of

applications including high-performance DSPs,

FPGAs, smart phones, portable instruments,

and DVD drivers.

FEATURES

• Wide 2.5V-to-5.5V Operating Input Range

• Fixed Output Voltages: 1.1V & 1.8V

• 100% Duty Cycle in Dropout

• Up to 3A Output Current

• Low IQ: 80µA

• 60mΩ and 30mΩ Internal Power MOSFET

Switches

• Input Voltage Failure Indicator

• Default 1.2MHz Switching Frequency

• EN and Power-Good for Power Sequencing

• Cycle-by-Cycle Over-Current Protection

• Auto Discharge at Power-Off

• Short-Circuit Protect with Hiccup Mode

• Stable with Low-ESR Output Ceramic

Capacitors

• Available in a 2.2mm x 2.6mm QFN16

Package

APPLICATIONS

• Low Voltage I/O System Power

• Handheld/Battery-powered Systems

• Wireless/Networking Cards

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

status, please visit MPS website under Products, Quality Assurance page.

“MPS” and “The Future of Analog IC Technology” are registered trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

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