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reference designMP28258

Monolithic Power Systems MP28258

High Efficiency, Fast Transient, 3A, 4.2V-20V Input Synchronous Step-down Converter in QFN12 (2x3mm)

Overview

TopologyBuck Converter
Input voltage4.2-20 V
Output 11.2 V / 3 A
IC revision1.14

Description

The MP28258 is a fully-integrated, highefficiency,synchronous, step-down, switch mode converter. It offers a very compact solution that can achieve a 3A continuous output current over a wide input supply range with excellent load and line regulation, and can operate at high efficiency over a wide outputcurrent load range.Constant-On-Time (COT) control mode provides fast transient response and eases loop stabilization.Full protection features include SCP, OCP, OVP, UVP and, thermal shut down.The MP28258 requires a minimal number of readily-available standard external components.This device is available in a space saving 2mmx3mm 12-pin QFN package.

Features

  • Wide 4.2V to 20V Operating Input Range
  • 3A Output Current
  • Low RDS(ON) Internal Power Mosfets
  • Proprietary Switching Loss Reduction Technique
  • Power-Good Indicator in QFN Package
  • Soft Startup/Shutdown
  • Programmable Switching Frequency
  • SCP, OCP, UVP Protection and Thermal Shutdown
  • Optional OCP Protection: Latch-Off Mode and Hiccup Mode.
  • Output Adjustable From 0.815V To 13V
  • Available in a QFN12 (2x3mm) Package

Typical applications

  • Networking Systems
  • Distributed Power Systems

More information

Products

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Data­sheet
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Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
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7443552200
SPECWE-HCI SMT Flat Wire High Current Inductor, 2 µH, 14.8 A
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance2 µH
Performance Rated Current14.8 A
Saturation Current @ 10%5 A
Saturation Current @ 30%13 A
DC Resistance7.3 mΩ
Self Resonant Frequency53 MHz
MaterialWE-PERM 
Packaging Unit800 
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