Monolithic Power Systems MP28257

Description

The MP28257 is a fully-integrated, synchronous, step-down, switch-modeconverter with a programmable frequency. It offers a very compact solution that can provide up to 4A of continuous output current over a wide input supply range with excellent load and line regulation, and can operate at high efficiency over a wide output current load range.Constant-on-time control mode provides fast transient response and eases loop stabilization.Protections include short-circuit protection, over-current protection, over-voltage protection,under-voltage protection, and thermal shut down.The MP28257 requires a minimal number of readily-available standard external components.The device is available in a space saving 2mmx3mm QFN12 package that complies with ROHS.

Features

• Wide 4.2V-to-20V Operating Input Range
• 4A Continuous Output Current
• Internal 120mΩ High-Side, 50mΩ Low-Side Power MOSFETs
• Stable with Ceramic Output Capacitors
• Proprietary Switching Loss-Reduction Technology
• Power-Good Indicator
• Soft Startup/Shutdown
• Programmable Switching Frequency
• SCP, OCP, OVP, UVP Protection and Thermal Shutdown
• Output Adjustable from 0.815V to 13V
• Available in a 2mmx3mm QFN12Package

Typical applications

• Networking Systems
• Distributed Power Systems

More information

• Datasheet
• IC product information