DESCRIPTION

The MP2351 is a monolithic step down switch mode converter with a built in internal power MOSFET. It achieves 1.5A continuous output current over a wide input supply range with excellent load and line regulation.

Current mode operation provides fast transient response and eases loop stabilization.

Fault condition protection includes cycle-by-cycle current limiting, short circuit frequency foldback and thermal shutdown. In shutdown mode the regulator draws 20µA of supply current.

The MP2351 requires a minimum number of readily available standard external components

FEATURES

• 1.5A Output Current

• 0.18Ω Internal Power MOSFET Switch

• Stable with Low ESR Output Ceramic Capacitors

• Up to 93% Efficiency

• 20µA Shutdown Mode

• Fixed 1.4MHz Frequency

• Thermal Shutdown

• Cycle-by-Cycle Over Current Protection

• Wide 4.75V to 23V Operating Input Range

• Output Adjustable from 1.23V to 16V

• Programmable Under Voltage Lockout

• Frequency Synchronization Input

• Available in QFN (3mm x 3mm) and tiny 10-Pin MSOP Packages

• Evaluation Board Available

APPLICATIONS

• Distributed Power Systems

• Battery Charger

• DSL Modems

• Pre-Regulator for Linear Regulators