MP2155
High Efficiency
Single Inductor Buck-Boost Converter
with 2.2A Switches
The Future of Analog IC Technology
DESCRIPTION
FEATURES
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High Efficiency up to 95%.
Load Disconnect During Shutdown
Input Voltage Range: 2V to 5.5V
Adjustable Output Voltage from 1.5V to 5V
3.3V/1A Load Capability from 2.7V-to-5.5V
Vin
The MP2155 is a highly efficient, low quiescent
current Buck-Boost converter, which operates
from input voltage above, below and equal to
the output voltage. The device provides power
solution for products powered by a one-cell
Lithium-Ion or multi-cell alkaline battery
applications where the output voltage is within
battery voltage range.
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1MHz Switching Frequency
Pulse Skipping Mode at Light Load
Typical 80μA Quiescent Current
Internal Loop Compensation for Fast
Response
The MP2155 uses a current mode, fixed
frequency PWM control for optimal stability and
transient response. The fixed 1MHz switching
frequency and integrated low RDS(ON) N-channel
and P-channel MOSFETs minimize the solution
footprint while maintaining high efficiency.
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Internal Soft Start
OTP, Hiccup SCP
Available in Small 3x3mm QFN10 Package
APPLICATIONS
To ensure the longest battery life MP2155 has
an optional pulse skipping mode that reduces
switching frequency under light load conditions.
For other low noise applications where variable
frequency power save mode may cause
interference, the logic control input MODE pin
forces fixed frequency PWM operation under all
load conditions.
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Battery-Powered Products
Portable Instruments
Tablet PCs
POS Systems
GSM/GPRS
System Controls
All MPS parts are lead-free and adhere to the RoHS directive. For MPS green
status, please visit MPS website under Quality Assurance.
The MP2155 operates with input voltage from
2V to 5.5V to provide adjustable output voltage
(1.5V to 5V). With an input from 2.7V to 5.5V it
can supply a maximum 1A current to load at
3.3V output voltage. The MP2155 is available in
small QFN10-3x3mm package.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks
of Monolithic Power Systems, Inc.
TYPICAL APPLICATION
MP2155 Rev. 1.0
1/26/2014
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2014 MPS. All Rights Reserved.
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