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.

FEATURES

 Very Low IQ: 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