The Future of Analog IC Technology
5.5V, 6A, 1.2MHz, High-Efficiency, 40μA IQ
Synchronous, Step-Down Switcher
The MP2145 is a monolithic, step-down, switch-
mode converter with internal power MOSFETs. It
can achieve up to 6A continuous output current
from a 2.8V-to-5.5V input voltage with excellent
load and line regulation. The output voltage can
be regulated to as low as 0.6V.
Constant-on-time control provides a fast transient
response and eases loop stabilization. Fault
condition protections include cycle-by-cycle
current limiting and thermal shutdown.
The MP2145 is available in a small QFN2×3mm
package and requires only a minimal number of
readily-available, standard, external components.
The MP2145 is ideal for a wide range of
applications, including storage (SSD, HDD), high-
performance DSPs, FPGAs, and distributed
Up to 6A Output Current
Wide 2.8V-to-5.5V Operating Input Range
20mΩ and 12mΩ Internal Power MOSFETs
40µA Quiescent Current
1.2MHz Fixed Switching Frequency
100% Duty Cycle in Dropout
1% Feedback Accuracy
External Mode Control
External VCON Control
Adjustable Output from 0.6V
1.5ms Internal SS Time with Pre-Bias Startup
Cycle-by-Cycle Over Current Protection
Short Circuit Protection with Hiccup Mode
Stable with Low-ESR Output Ceramic
Available in a 2mm×3mm QFN Package
Output Discharge Function
Storage (SSD, HDD)
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.
2.8V to 5.5V
MP2145 Rev. 1.12
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
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