The Future of Analog IC Technology
1A, 6V, 1.5MHz, 17μA I
Q
, COT
Synchronous Step Down Switcher
In Ultra-small 2x1.5mm QFN
FEATURES
Very Low I
Q
: 17μA
Default 1.5MHz Switching Frequency
EN and Power Good for Power Sequencing
Ultra-small 2.0x1.5mm QFN8 Package
Wide 2.5V to 6V Operating Input Range
Output Adjustable from 0.6V
Up to 1A Output Current
118mΩ and 88mΩ Internal Power MOSFET
Switches
Cycle-by-Cycle Over Current Protection
Short Circuit Protect with Hiccup Mode
Stable with Low ESR Output Ceramic
Capacitors
Wireless/Networking Cards
Portable Instruments
Battery Powered Devices
Low Voltage I/O System Power
MP2158
DESCRIPTION
The MP2158 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 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
shutdown.
The MP2158 is available in the small QFN8
2.0x1.5mm package and requires a minimum
number of readily available standard external
components.
The MP2158 is ideal for a wide range of
applications including High Performance DSPs,
FPGAs, PDAs, and portable instruments.
APPLICATIONS
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
MP2158 Rev. 1.0
10/10/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
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