DESCRIPTION
The MP2238 is a high frequency, synchronous,
rectified, step-down switch-mode converter. It
offers a fully integrated solution to achieve an
8A continuous output current with excellent load
and line regulation over a wide input supply
range.
Constant-on-time (COT) control operation
provides fast transient response. Full protection
features include hiccup over-current protection
and thermal shutdown.
The MP2238 requires a minimal number of
readily available, standard, external
components with a space-saving 12-pin QFN
2mmx3mm package.
TYPICAL APPLICATION
MP2238
High-Efficiency, 8A, 18V,
Synchronous Step-Down Converter
FEATURES
Wide 4.2V to 18V Operating Input Range
8A Continuous Output Current
22mΩ/10mΩ Low RDS(ON) Internal Power
MOSFETs
Default 600mV Reference Voltage
Adjustable Output Voltage
600kHz Switching Frequency
Ton Extension
Hiccup OCP Protection
Thermal Shutdown Protection
Available in a 12-Pin QFN 2mmx3mm
Package
APPLICATIONS
Flat-Panel Television and Monitors
Digital TV Power Supply
Digital Set-Top Boxes
Distributed Power Systems
General Consumer
All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For
MPS green status, please visit the MPS website under Quality
Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are trademarks
of Monolithic Power Systems, Inc. or its subsidiaries.
Efficiency
VOUT = 1V, L = 0.68μH, DCR = 3.1mΩ
100
95
90
85
80
75
70
65
Vin=5V
60
55
50
0.01
0.1
Vin=12V
Vin=18V
1
10
LOAD CURRENT (A)
MP2238 Rev. 1.0
www.MonolithicPower.com
1
4/23/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2019 MPS. All Rights Reserved.
