MP2148
1A Synchronous Step-down Converter
with 11µA Iq in Ultra-small 1x1.5mm QFN
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP2148 is a monolithic, step-down, switch-
mode converter with built-in internal power
MOSFETs. It achieves 1A continuous output
current from a 2.3V-to-5.5V input voltage with
excellent load and line regulation. The output
voltage can be regulated to as low as 0.6V.
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Low IQ: 11μA
2.2MHz Switching Frequency
EN for Power Sequencing
Power Good Only for Fixed Output Version
Wide 2.3V-to-5.5V Operating Input Range
Output Adjustable from 0.6V
Up to 1A Output Current
120mΩ and 80mΩ Internal Power MOSFET
Switches
Output Discharge
The
Constant-On-Time
control
scheme
provides fast transient response and eases loop
stabilization. Fault protections include cycle-by-
cycle current limiting and thermal shutdown.
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100% Duty Cycle
The MP2148 is available in an ultra-small QFN-
6 (1.0mmx1.5mm) package and requires a
minimal number of readily available standard
external components.
Short-Circuit Protection with Hiccup Mode
Stable with Low ESR Output Ceramic
Capacitors
Available in a QFN-6 (1.0mmx1.5mm)
Package
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The MP2148 is ideal for a wide range of
applications including high performance DSPs,
wireless power, portable and mobile devices,
and other low-power systems.
APPLICATIONS
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Wireless/Networking Cards
Portable and Mobile Devices
Battery Powered /Wearable Devices
Low Voltage I/O System Power
All MPS parts are lead-free, halogen free, and adhere to the RoHS directive. For
MPS green status, please visit MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks
of Monolithic Power Systems, Inc.
TYPICAL APPLICATION
L1
1μH
VIN
5V
VOUT
1.2V/1A
SW
VIN
OUT
C2
10μF
C1
10μF
R1
200kΩ
MP2148
EN
FB
EN
R2
200kΩ
GND
MP2148 Rev. 1.11
5/25/2015
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2015 MPS. All Rights Reserved.
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