MP2155GQ-Z Datasheet, PDF (1/18 Pages) MPS Industries, Inc. – High Efficiency Single Inductor Buck-Boost Converter with 2.2A Switches

The Future of Analog IC Technology
MP2155
High Efficiency
Single Inductor Buck-Boost Converter
with 2.2A Switches
DESCRIPTION
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.
The MP2155 uses a current mode, fixed
frequency PWM control for optimal stability and
transient response. The fixed 1MHz switching
frequency and integrated low R_DS(ON) N-channel
and P-channel MOSFETs minimize the solution
footprint while maintaining high efficiency.
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.
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.
TYPICAL APPLICATION
FEATURES
• 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
• 1MHz Switching Frequency
• Pulse Skipping Mode at Light Load
• Typical 80μA Quiescent Current
• Internal Loop Compensation for Fast
Response
• Internal Soft Start
• OTP, Hiccup SCP
• Available in Small 3x3mm QFN10 Package
APPLICATIONS
• 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.
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks
of Monolithic Power Systems, Inc.
MP2155 Rev. 1.0
www.MonolithicPower.com
1
1/26/2014
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