MP28255中文资料21V, 4A, 500kHz Synchronous Step-down Converter数据手册MPS规格书

描述 Description

The MP28255 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 4A continuous output current over a wide input supply range with excellent load and line regulation. The MP28255 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 MP28255 requires a minimum number of readily available standard external components and is available in a space saving 3x4mm 14-pin QFN package.

特性 Features

● Wide 4.5V to 21V Operating Input Range
● 4A 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 QFN 3x4mm Package