MP2227
The Future of Analog IC Technology
24V, 3A, 1.3MHz Synchronous
Step-Down Converter
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
Adjustable Output from 0.8V to 0.9xV
IN
Internal LDO for V
CC
supply
1MHz to 2MHz Frequency Synchronization
POK
Thermal Shutdown
Cycle-by-Cycle Current Limiting
Hiccup Short Circuit Protection
10-lead, 3mm x 3mm QFN Package
µP/ASIC/DSP/FPGA Core and I/O Supplies
Printers and LCD TVs
Network and Telecom Equipment
Point of Load Regulators
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
output voltage from 0.8V to 0.9xV
IN
at up to 3A
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.
APPLICATIONS
For MPS green status, please visit MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
Efficiency
100
90
80
V
IN
=12V, V
OUT
=5V
EFFICIENCY (%)
70
60
50
40
30
20
10
0
0.0
0.5 1.0 1.5 2.0 2.5
LOAD CURRENT ( A )
3.0
MP2227 Rev. 1.1
11/21/2011
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
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