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reference designMP4470

Monolithic Power Systems MP4470

High-Efficiency, Fast-Transient, 5A, 36V Synchronous, Step-Down Converter

Overview

TopologyBuck Converter
Input voltage4.5-36 V
Switching frequency200-1000 kHz
Output 13.3 V / 5 A
IC revision1.11

Description

The MP4470/4470A is a fully-integrated, highfrequency, synchronous, rectified, step-down, switch-mode converter. It offers a very compactsolution to achieve a 5A, continuous-output current over a wide input-supply range with excellent load and line regulation. It also provides fast transient response and good stability for wide input-supply and load range.The MP4470/4470A operates at high efficiency over a wide output current load range.MP4470 has full protection features include SCP, OCP, OVP latch, UVP, and thermal shutdown. MP4470A has the same protection features to MP4470 except has no OVP latch function.The MP4470/4470A requires a minimal number of readily-available, standard, external components, and is available in a space-saving 3mm×4mm, 20-pin, QFN package.

Features

  • Wide 4.5V-to-36V Operating Input Range
  • Guaranteed 5A, Continuous Output Current
  • Internal 40mΩ High-Side, 20mΩ Low-Side Power MOSFETs
  • Proprietary Switching-Loss-Reduction Technology
  • 1% Reference Voltage
  • Programmable Soft-Start Time
  • Low Drop-out Mode
  • 200kHz-to-1MHz Switching Frequency
  • SCP, OCP, OVP Latch(MP4470 only), UVP, and Thermal Shutdown
  • Output Adjustable from 0.8V to 0.9×VIN
  • Available in a 3×4mm 20-pin QFN Package

Typical applications

  • Networking Systems
  • Distributed Power and POL Systems
  • Optical Communications Systems
  • Notebook Systems and I/O Power
  • Industrial Supplies
  • Automotive Systems

More information

Parts approved by Monolithic Power Systems

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Order Code
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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7443251000
SPECWE-HCI SMT Flat Wire High Current Inductor, 10 µH, 9.5 A

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance10 µH
Performance Rated Current9.5 A
Saturation Current @ 10%4 A
Saturation Current @ 30%8.5 A
DC Resistance16.3 mΩ
Self Resonant Frequency21 MHz
MaterialSuperflux 
Packaging Unit700 
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