MP2181 Datasheet: 1A Synchronous Step-down Converter





MP2181 Datasheet PDF Download

Part Number MP2181
Description 1A Synchronous Step-down Converter
Manufacture MPS
Total Page 2 Pages
PDF Download Download MP2181 Datasheet PDF

Features: MP2181 1A Synchronous Step-down Converte r with SS & PG The Future of Analog IC Technology PRELIMINARY SPECIFICATIONS S UBJECT TO CHANGE DESCRIPTION The MP218 1 is a monolithic, step-down, switchmod e converter with built-in internal powe r MOSFETs. It achieves 1A continuous ou tput current from a 2.5V-to-5.5V input voltage with excellent load and line re gulation. The output voltage can be reg ulated to as low as 0.6V. The Constant- On-Time control scheme provides fast tr ansient response and eases loop stabili zation. Fault protections include cycle -bycycle current limiting and thermal s hutdown. The MP2181 is available in an ultra-small SOT583 package and requires a minimal number of readily available standard external components. The MP218 1 is ideal for a wide range of applicat ions including high performance DSPs, w ireless power, portable and mobile devi ces, and other low-power systems. FEAT URES  Low IQ: 21μA  1.2MHz Switc hing Frequency  EN for Power Sequencing  1% FB Accuracy  Wide 2.5.

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MP2181
1A Synchronous Step-down
Converter with SS & PG
The Future of Analog IC Technology
PRELIMINARY SPECIFICATIONS SUBJECT TO CHANGE
DESCRIPTION
The MP2181 is a monolithic, step-down, switch-
mode converter with built-in internal power
MOSFETs. It achieves 1A continuous output
current from a 2.5V-to-5.5V input voltage with
excellent load and line regulation. The output
voltage can be regulated to as low as 0.6V.
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.
The MP2181 is available in an ultra-small
SOT583 package and requires a minimal
number of readily available standard external
components.
The MP2181 is ideal for a wide range of
applications including high performance DSPs,
wireless power, portable and mobile devices,
and other low-power systems.
FEATURES
Low IQ: 21μA
1.2MHz Switching Frequency
EN for Power Sequencing
1% FB Accuracy
Wide 2.5V-to-5.5V Operating Input Range
Output Adjustable from 0.6V
Up to 1A Output Current
90mΩ and 50mΩ Internal Power MOSFET
Switches
100% Duty On
Output Discharge
Vo OVP
External Soft Start Control
Short-Circuit Protection with Hiccup Mode
Power Good
Available in a SOT583 Package
APPLICATIONS
Wireless/Networking Cards
Portable Instruments
Battery Powered Devices
Low Voltage I/O System Power
Multi Function Printer
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. Output Current
100
95
90
85
80
75
70
0.001
Vin=2.5V,Vo=1.2V
Vin=3.6V,Vo=1.2V
Vin=5V,Vo=1.2V
0.01 0.1
OUTPUT CURRENT(A)
1
MP2181 Rev. 0.81
www.MonolithicPower.com
1/16/2019
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
Preliminary Specifications Subject to Change
© 2019 MPS. All Rights Reserved.
1

     






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