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reference designMP3425 | Demoboard EV3425DL-00A

Monolithic Power Systems MP3425 | Demoboard EV3425DL-00A

Boost Converter With a 55V, 3.5A Switch

Overview

TopologyBoost Converter
Input voltage10-22 V
Switching frequency300-2000 kHz
Output 148 V / 0.35 A
IC revision1.1

Description

The MP3425 is a current mode step-upconverter with a 3.5A, 90mΩ internal switch toprovide a highly efficient regulator with fastresponse. The MP3425 operates at aprogrammed fix frequency up to 2MHz allowingfor easy filtering and low noise. An externalcompensation pin gives the user flexibility insetting loop dynamics, which allows the use ofsmall, low-ESR ceramic output capacitors. Soft startresults in small inrush current and can beprogrammed with an external capacitor. TheMP3425 operates from an input voltage as lowas 3.0V and can generate 48V at up to 350mAfrom a 12V supply.The MP3425 includes under-voltage lockout,current limiting and thermal overload protectionto prevent damage in the event of an outputoverload. The MP3425 is available in a lowprofile 14-pin QFN package with exposed pad.

Features

  • 3.5A, 90mΩ, 55V Power MOSFET
  • Uses Tiny Capacitors and Inductors
  • Wide input range: 3V to 22V
  • Output Voltage as High as 55V
  • Programmable FSW: 300kHz – 2 MHz
  • Programmable UVLO, Soft-Start
  • Micro power shutdown : Iq < 1uA
  • Thermal Shutdown 150 Deg C
  • Available in an 8-Pin SOIC and 14-Pin QFNPackage with Exposed Pad

Typical applications

  • Telecom – Power Supply
  • Automotive – Battery Charger
  • Audio - Microphone and Tuner Bias

More information

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L(µH)
IRP,40K(A)
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7447709330
SPECWE-PD SMT Power Inductor, 33 µH, 5.5 A
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-PD SMT Power Inductor
Inductance33 µH
Performance Rated Current5.5 A
DC Resistance45 mΩ
Self Resonant Frequency8.5 MHz
Size1210 
VersionStandard 
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