Monolithic Power Systems MP28251

Description

The MP28251 is a synchronous, rectified, stepdown, switch-mode converter with internal power MOSFETs. It offers a very compact solution to achieve a 4A continuous output current over a wide input supply range with excellent load and line regulation. The MP28251 has synchronous mode operation forhigher efficiency over the output current load range.Current-mode operation provides a fast transient response and eases loop stabilization. Full protection features include over-current protection and thermal shutdown.The MP28251 requires a minimal number of readily-available standard external components and is available in a space saving 2mm×3mm14-pin QFN package.

Features

• Wide 4.75V-to-20V Operating Input Range
• 4A Output Current
• Low RDS(ON) Internal Power MOSFETs
• Programmable Switching Frequency
• Programmable EN Delay
• Frequency SYNC from 300kHz to 2MHz External Clock
• Low Power Mode Selectable by an External Signal
• External Soft Start
• OCP and Thermal Shutdown
• Available in a 14-pin QFN2×3 Package

Typical applications

• DSL Modems
• Set Top Boxes
• Cable Modems

More information

• Datasheet
• IC product information