DESCRIPTION

The MP2456 is a monolithic, step-down, switchmode converter with a built-in power MOSFET. It achieves a 0.5A peak-output current over a wide input supply range with excellent load and line regulation. Current-mode operation provides a fast transient response and eases loop stabilization. Fault condition protections include cycle-by-cycle current limiting and thermal shutdown.

The MP2456 requires a minimal number of readily-available external components. The MP2456 is available in a TSOT23-6 package.

FEATURES

 0.5A Peak Output Current

 1Ω Internal Power MOSFET

 Capable to Start Up with Big Output Capacitor

 Stable with Low-ESR Ceramic Output Capacitors

 Up to 90% Efficiency

 0.1μA Shutdown Mode

 Fixed 1.2MHz Frequency

 Thermal Shutdown

 Cycle-by-Cycle Over-Current Protection

 Wide 4.5V-to-50V Operating Input Range

 Output Adjustable from 0.81V to 0.9xVIN

 Available in a TSOT23-6 Package

APPLICATIONS

 Power Meters

 Distributed Power Systems

 Battery Chargers

 Pre-Regulator for Linear Regulators

 WLED Drivers