MP2227

24V, 3A, 1.3MHz Synchronous

Step-Down Converter

MP2227 Rev. 1.1

www.MonolithicPower.com

1

11/21/2011

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© 2011 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2227 is an internally compensated

1.3MHz fixed frequency PWM synchronous

step-down regulator. MP2227 operates from a

3V to 24V input and generates an adjustable

load current.

The MP2227 integrates a 160mΩ high-side

switch and an 80mΩ synchronous rectifier for

high efficiency without an external Schottky

diode. With peak current mode control and

internal compensation, it is stable with an

output ceramic capacitor and a small inductor.

Fault protection includes hiccup short-circuit

protection, cycle-by-cycle current limiting and

thermal shutdown. Other features include

frequency synchronization and soft-start.

The MP2227 is available in a small 3mm x 3mm

10-lead QFN package.

FEATURES

 3A Output Current

 Input Supply Range: 3V to 24V

 160mΩ high-side, 80mΩ low-side Internal

Power MOSFET Switches

 All Ceramic Output Capacitor Design

 Up to 95% Efficiency

 1.3MHz Fixed Switching Frequency

 1MHz to 2MHz Frequency Synchronization

 POK

 Thermal Shutdown

 Cycle-by-Cycle Current Limiting

 Hiccup Short Circuit Protection

 10-lead, 3mm x 3mm QFN Package

APPLICATIONS

 µP/ASIC/DSP/FPGA Core and I/O Supplies

 Printers and LCD TVs

 Network and Telecom Equipment

 Point of Load Regulators

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“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic

Power Systems, Inc.

TYPICAL APPLICATION

Efficiency

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LOAD CURRENT ( A )