MP2159 Datasheet, PDF (1/13 Pages) Monolithic Power Systems – 1A, 6V, 1.5MHz, 17A IQ, COT Synchronous Step Down Switcher In 8-pin TSOT23

The Future of Analog IC Technology
DESCRIPTION
The MP2159 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 MP2159 is available in the small TSOT23-8
package and requires a minimum number of
readily available standard external components.
The MP2159 is ideal for a wide range of
applications including High Performance DSPs,
FPGAs, PDAs, and portable instruments.
TYPICAL APPLICATION
MP2159
1A, 6V, 1.5MHz, 17μA I_Q, COT
Synchronous Step Down Switcher
In 8-pin TSOT23
FEATURES
• Very Low I_Q: 17μA
• Default 1.5MHz Switching Frequency
• EN and Power Good for Power Sequencing
• Wide 2.5V to 6V Operating Input Range
Output Adjustable from 0.6V
• Up to 1A Output Current
• 100% Duty Cycle in Dropout
• 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
• Available in a TSOT23-8 Package
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.
MP2159 Rev. 1.03
www.MonolithicPower.com
1
9/6/2013
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