MP2112
1MHz, 1A Synchronous
Step-Down Converter
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP2112 is a 1MHz constant frequency,
current mode, PWM step-down converter. The
device integrates a main switch and a
synchronous rectifier for high efficiency without
an external Schottky diode. It is ideal for
powering portable equipment that powered by a
single cell Lithium-Ion (Li+) battery. The
MP2112 can supply 1A of load current from a
2.5V to 6V input voltage. The output voltage
can be regulated as low as 0.6V. The MP2112
can also run at 100% duty cycle for low dropout
applications.
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The MP2112 is available in space-saving 6-pin
QFN and TSOT23-5 packages.
APPLICATIONS
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High Efficiency: Up to 95%
1MHz Constant Switching Frequency
1A Available Load Current
2.5V to 6V Input Voltage Range
Output Voltage as Low as 0.6V
100% Duty Cycle in Dropout
Current Mode Control
Short Circuit Protection
Thermal Fault Protection
<0.1μA Shutdown Current
Space Saving 3mm x 3mm QFN6 and
TSOT23-5 Packages
Cellular and Smart Phones
Microprocessors and DSP Core Supplies
PDAs
MP3 Players
Digital Still and Video Cameras
Portable Instruments
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Products, Quality Assurance page.
“MPS” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
Efficiency vs
Load Current
VIN
2.5V to 6V
100
VINA
EN
MP2112
4
2
VINB
GND
SW
FB
6
3
90
EN
VOUT
1.8V/1A
1
VIN = 3.3V
80
EFFICIENCY (%)
5
VIN = 4.2V
70
60
50
40
30
20
10
0
MP2112_TAC_S01
10
100
LOAD CURRENT (mA)
1000
MP2112-EC01
MP2112 Rev. 1.51
10/25/2011
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2011 MPS. All Rights Reserved.
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