MP2227 Datasheet, PDF (1/13 Pages) Monolithic Power Systems – 24V, 3A, 1.3MHz Synchronous Step-Down Converter

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
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.
MP2227
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
APPLICATIONS
 µP/ASIC/DSP/FPGA Core and I/O Supplies
 Printers and LCD TVs
 Network and Telecom Equipment
 Point of Load Regulators
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
V_IN=12V, V_OUT=5V
100
90
80
70
60
50
40
30
20
10
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0
LOAD CURRENT ( A )
MP2227 Rev. 1.1
11/21/2011
www.MonolithicPower.com
1
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.