MP2131GG-Z Datasheet, PDF (1/16 Pages) MPS Industries, Inc. – High Efficiency, 4 A, 5.5 V, 1.2 MHz Synchronous Step-Down Converter

The Future of Analog IC Technology
DESCRIPTION
The MP2131 is a monolithic step-down, switch-
mode converter with built-in internal power
MOSFETs. It achieves a 4 A continuous output
current from a 2.7 V to 5.5 V input voltage with
excellent load and line regulation. The MP2131
is ideal for powering portable equipment that
run from a single cell lithium-ion (Li+) battery.
The output voltage is regulated as low as 0.6 V.
The constant-on-time (COT) control scheme
provides fast transient response, high light-load
efficiency, and eases loop stabilization.
Fault condition protection includes
cycle-by-cycle current limit and thermal
shutdown.
The MP2131 requires a minimum number of
readily available, standard, external
components and is available in an ultra-small
QFN-12 (2mm x 2mm) package.
The MP2131 is ideal for a wide range of
applications including portable instruments,
small handheld and battery–powered devices,
PDAs, and DVD drives.
TYPICAL APPLICATION
MP2131
High Efficiency, 4 A, 5.5 V, 1.2 MHz
Synchronous Step-Down Converter
FEATURES
• Wide 2.7 V to 5.5 V Operating Input Range
• Output Voltage as Low as 0.6 V
• 4 A Output Current
• 35 mΩ and 18 mΩ Internal Power MOSFET
• Above 96% Peak Efficiency
• Above 80% Light Load Efficiency
• Low IQ: 19 μA
• 1.2 MHz Frequency
• 100% Duty Cycle in Dropout
• 0.5 ms Internal Soft-Start Time
• EN and Power Good for Power Sequencing
• Auto Discharge at EN Off
• Short-Circuit Protection with Hiccup Mode
• Available in a QFN-12 (2mm x 2mm)
Package
APPLICATIONS
• Storage Drives
• Portable/Handheld Devices
• Wireless/Networking Cards
• 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 the MPS website under Quality Assurance.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
MP2131 Rev.1.0
www.MonolithicPower.com
1
5/6/2015
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