DESCRIPTION

The MP1423 is a step-down regulator with a

built in internal Power MOSFET. It achieves 3A

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 and thermal shutdown.

Adjustable soft-start reduces the stress on the

input source at turn-on. In shutdown mode the

regulator draws 20μA of supply current.

The MP1423 requires a minimum number of

readily available external components to

complete a 3A step-down DC to DC converter solution.

FEATURES

? 3A Output Current

? Programmable Soft-Start

? 110mΩ Internal Power MOSFET Switch

? Stable with Low ESR Output Ceramic Capacitors

? Up to 94 Efficiency

? 20μA Shutdown Mode

? Fixed 385KHz Frequency

? Thermal Shutdown

? Cycle-by-Cycle Over Current Protection

? Wide 6V to 23V Operating Input Range

? Output is Adjustable From 1.22V to 21V

? Under Voltage Lockout

APPLICATIONS

? Distributed Power Systems

? Battery Chargers

? Pre-Regulator for Linear Regulators