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IC manufacturers Monolithic Power Systems

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reference designMP28275

Monolithic Power Systems MP28275

7V, 5A, 1.1MHz Synchronous Step-down Converter

Overview

TopologyBuck Converter
Input voltage4.5-7 V
Switching frequency900-1300 kHz
Output 11.2 V / 5 A
IC revision1.0

Description

The MP28275 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 5A continuous output current with excellent load and line regulation. The MP28275 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 MP28275 requires a minimum number of readily available standard external components and is available in a space saving 3mm x 4mm 14-pin QFN package.

Features

  • 4.5V to 7V Operating Input Range
  • 5A Output Current
  • Low RDS(ON) Internal Power MOSFETs
  • Proprietary Switching Loss Reduction Technique
  • Fixed 1.1MHz Switching Frequency
  • Sync from 300kHz to 2MHz External Clock
  • Internal Compensation
  • Thermal Shutdown
  • Over-Current-Protection and Hiccup
  • Output Adjustable from 0.8V
  • Available in 3x4mm QFN14 Package

Typical applications

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

More information

Products

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Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
SamplesAvailability & Sample
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744310095
SPECWE-HCI SMT Flat Wire High Current Inductor, 0.95 µH, 14.4 A
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance0.95 µH
Performance Rated Current14.4 A
Saturation Current @ 10%5 A
Saturation Current @ 30%13 A
DC Resistance6.2 mΩ
Self Resonant Frequency90 MHz
MaterialSuperflux 
Packaging Unit1500 
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