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IC manufacturers Monolithic Power Systems

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reference designMP28266

Monolithic Power Systems MP28266

21V, 3A, 500kHz, Synchronous Step-Down Converter

Overview

TopologyBuck Converter
Input voltage6-21 V
Switching frequency425-595 kHz
Output 118 V / 3 A
IC revision1.0

Description

The MP28266 is a synchronous, rectified, stepdown,switch-mode converter with built in internal power MOSFETs. It offers a very compact solution to achieve a 3A continuous output current over a wide input supply range,with excellent load and line regulation. The MP28266 has synchronous mode operation for higher efficiency over the output-current–load range.Current-mode operation provides a fast transient response and eases loop stabilization. Full protection features include over-current protection and thermal shutdown.The MP28266 requires a minimal number of readily-available standard external components, and is available in a space-saving 3mm×4mm 14-pin QFN package.

Features

  • Wide 6V-to-21V Operating Input Range
  • 0.6V Internal Reference with 2% Accuracy
  • 3A Output Current
  • Low-Rds(ON) Internal Power MOSFETs
  • Fixed 500kHz Switching Frequency
  • Frequency SYNC from a 300kHz-to-2MHz External Clock
  • External Soft-Start
  • AAM Power-Save Mode
  • OCP and Thermal Shutdown
  • Available in a 3mm×4mm QFN14 Package.

Typical applications

  • DSL Modems
  • Cable Modems
  • Set Top Boxes

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
Qty.
SamplesAvailability & Sample
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7443552280
SPECWE-HCI SMT Flat Wire High Current Inductor, 2.8 µH, 12.1 A
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance2.8 µH
Performance Rated Current12.1 A
Saturation Current @ 10%4.8 A
Saturation Current @ 30%11 A
DC Resistance10.6 mΩ
Self Resonant Frequency46 MHz
MaterialWE-PERM 
Packaging Unit800 
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