MP2158 Datasheet, PDF (1/13 Pages) Monolithic Power Systems – 1A, 6V, 1.5MHz, 17A IQ, COT Synchronous Step Down Switcher In Ultra-small 2x1.5mm QFN

The Future of Analog IC Technology
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.
TYPICAL APPLICATION
MP2158
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
APPLICATIONS
 Wireless/Networking Cards
 Portable Instruments
 Battery Powered Devices
 Low Voltage I/O System Power
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.
MP2158 Rev. 1.0
www.MonolithicPower.com
1
10/10/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
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