MP28257

MP28257 4A, Fast Transient, 4.2V-to-20V Input Synchronous Step-Down Converter The Future of Analog IC Technology R DESCRIPTION The MP28257 is a fully-integrated, synchronous, O step-down, switch-mode converter with a programmable frequency. It offers a very F compact solution that can provide up to 4A of continuous output current over a wide input supply range with excellent load and line D regulation, and can operate at high efficiency over a wide output current load range. E Constant-on-time control mode provides fast transient response and eases loop stabilization. D Protections include short-circuit protection, N S 4 over-current protection, over-voltage protection, under-voltage protection, and thermal shut E N 8 down. M IG 3 The MP28257 requires a minimal number of readily-available standard external components. 2 The device is available in a space saving M S P 2mmx3mm QFN12 package that complies with O E M ROHS. 2mmx3mm QFN12 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 QFN12 Package APPLICATIONS  Networking Systems  Distributed Power Systems All MPS parts are lead-free and adhere to the ...