The Future of Analog IC Technology
1A, 6V, 1.5MHz, 17μA IQ, COT
Synchronous Step-Down Converter
in Ultra-Small 2x1.5mm QFN-8
The MP2158A is a monolithic step-down,
switch-mode converter with built-in internal
power MOSFETs. It achieves 1A of continuous
output current from a 2.5V to 6V input voltage
with excellent load and line regulation. The
output voltage can be regulated as low as 0.6V.
The constant-on-time control scheme provides
fast transient response and eases loop
stabilization. Fault condition protection includes
cycle-by-cycle current limiting and thermal
The MP2158A is available in a small QFN-8
(1.5mmx2mm) package and requires only a
minimal number of readily available, standard,
The MP2158A is ideal for a wide range of
applications, including high-performance DSPs,
FPGAs, PDAs, and portable instruments.
2.5V to 6V
Very Low IQ of 17μA
Default 1.5MHz Switching Frequency
1.5% VFB Accuracy
EN and Power Good for Power Sequencing
Wide 2.5V to 6V Operating Input Range
Output Adjustable from 0.6V
Up to 1A of Output Current
100% Duty Cycle in Dropout
120mΩ and 90mΩ Internal Power MOSFET
Cycle-by-Cycle Over-Current Protection
Short-Circuit Protection with Hiccup Mode
Stable with Low ESR Output Ceramic
Available in a QFN-8 (1.5mmx2mm)
Low Voltage I/O System Power
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.
MP2158A Rev. 1.02
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
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