Monolithic Power Systems MP28253

Description

The MP28253 is a high frequency synchronous rectified step-down switch mode converter with built in internal power MOSFETs. It offers a very compact solution to achieve 3A continuous output current over a wide input supply range with excellent load and line regulation. The MP28253 operates at high efficiency over a wide output current load range.Current mode operation provides fast transient response and eases loop stabilization.Full protection features include OCP and thermal shut down.The MP28253 requires a minimum number of readily available standard external components and is available in a space saving 3x4mm 14-pinQFN package.

Features

• Wide 4.5V to 21V Operating Input Range
• 3A Output Current
• Low RDS(ON) Internal Power MOSFETs
• Proprietary Switching Loss Reduction Technique
• Fixed 500kHz Switching Frequency
• External Soft-Start
• Sync from 300kHz to 2MHz External Clock
• Internal Compensation
• Integrated Bootstrap Diode
• Over-Current Protection and Hiccup
• Thermal Shutdown
• Output Adjustable from 0.8V
• Available in 14-pin QFN3x4 Package

Typical applications

• Monitors
• Distributed Power Systems
• Flat Panel Television
• Notebook Systems
• Networking Systems
• Personal Video Recorders
• Digital Set Top Boxes
• I/O Power

More information

• Datasheet
• IC product information