• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
  • Skip to footer

Power Electronic Tips

Power Electronic News, Editorial, Video and Resources

  • Products
    • Power Supplies
    • AC-DC
    • DC-DC
    • MOSFETS
    • Power Management
    • Battery Management
    • RF Power
    • Resistors
    • Capacitors
    • Magnetics
    • Transformers
  • Applications
    • LED Lighting
    • Rack Mount
    • Wireless
  • EE Forums
    • EDABoard.com
    • Electro-Tech-Online.com
  • EE Learning Center
    • Design Guides
      • WiFi & the IOT Design Guide
      • Microcontrollers Design Guide
      • State of the Art Inductors Design Guide
      • Power Electronics & Programmable Power
  • Video
    • EE Videos
    • TI Power Videos
    • Teardown Videos
  • Resources
    • Design Fast
    • eBooks / Tech Tips
    • FAQ
    • LEAP Awards
    • Podcasts
    • Webinars
    • White Papers

Step-down ultrathin regulator module handles ASIC, FPGA loads

August 15, 2018 By Aimee Kalnoskas Leave a Comment

LTM4686Analog Devices announces the Power by Linear LTM4686, a dual 10A or single 20A ultrathin step-down µModule regulator with a PMBus interface housed in a 16mm x 11.9mm x 1.82mm LGA package. The 1.82mm package height allows the LTM4686 to be placed on a PC board very close to its load such as an FPGA or ASIC, while sharing one heat sink covering both low-profile packages. The ultrathin package allows the LTM4686 to be mounted on the backside of a PCB, freeing topside space for components such as memory and transceiver ICs. This makes the LTM4686 suitable for height-restricted applications such as rack-mounted telecom switches and routers, raid systems, and test and measurement equipment. The PMBus interface enables users to measure and alter key power parameters such as voltage, load current and temperature. Users can also program sequencing, fault thresholds and responses via PMBus, storing values and fault log data in the onboard EEPROM.

The LTM4686 operates from 4.5V to 17V and the LTM4686-1 from 2.375V to 17V input supplies. These modules regulate an output from 0.5V to 3.6V with ±0.5% maximum DC output error over temperature,  ̶ 40°C to 125°C.  They deliver 80% efficiency at 12VIN to 1.0VOUT at a full load condition. The LTM4686 can deliver 18A from a 5VIN to a 1VOUT at 85°C ambient with 400LFM air flow. Current mode control enable operation in a parallel configuration, to deliver increased output current. Its internal switching frequency is settable from 250kHz to 1MHz and can be synchronized to an external clock from 250kHz to 1MHz for noise-sensitive applications.

The LTM4686 configurable offers protection features, including overvoltage and undervoltage, overcurrent and overtemperature. If a fault occurs, data is saved automatically to the EEPROM, and the fault log can be retrieved over an I2C interface, where it can then be analyzed. To evaluate the performance of the LTM4686, the LTpowerPlay GUI DC1613 USB-to-PMBus converter VDC2086 programing adapter and demo kits are available. The device is available now.

Summary of Features: LTM4686

  • Dual, Fast Analog Loops with Digital Interface for Control & Monitoring
  • Dual 10A or Single 20A Output
  • Wide Input Voltage Range: 4.5V to 17V, 2.375V to 17V with Aux 5V Bias (LTM4686-1)
  • Output Voltage Range: 0.5V to 3.6V
  • ±0.5% Maximum DC Output Error Over Temperature
  • Constant Frequency Current Mode Control
  • Parallel & Current Share Multiple Modules
  • Onboard EEPROM
  • Ultrathin 16mm x 11.9mm x 1.82mm LGA Package

Filed Under: Regulators Tagged With: analogdevicesinc, lineartechnologyinc

Reader Interactions

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Primary Sidebar

CURRENT DIGITAL ISSUE

A frequency you can count on There are few constants in life, but what few there are might include death, taxes, and a U.S. grid frequency that doesn’t vary by more than ±0.5 Hz. However, the certainty of the grid frequency is coming into question, thanks to the rising percentage of renewable energy sources that…

More from the digital archive

DesignFast

Component Selection Made Simple.

Try it Today
design fast globle

Subscribe to our Newsletter

The Power Electronic eNewsletter delivers breaking electronic and power component news, resources, product innovations and more.

Subscribe today

EE TRAINING CENTER CLASSROOMS

EE Classrooms

RSS Current EDABoard.com discussions

  • Inverting Preamp schematic
  • Transformer isolated IGBT switch -- Zener diode heating
  • How to properly terminate clock signal through a transformer
  • 1 dollar for 5 pcbs; Free assemble for PCBA less than 10 pcs at the Elecrow
  • Cavity bandstop filter

RSS Current Electro-Tech-Online.com Discussions

  • Basic questions about MOSFETS, Gate Drivers and Diodes
  • LTSpice DC-AC
  • Circuit Problem
  • Google translate suggest "device sheet" or "apparatus sheet" but that cannot be ?
  • Right channel distortion on vintage fisher rs-2010

Footer

EE World Online Network

  • DesignFast
  • EE World Online
  • EDA Board Forums
  • Electro Tech Online Forums
  • Connector Tips
  • Microcontroller Tips
  • Analog IC Tips
  • Sensor Tips
  • Test and Measurement Tips
  • Wire and Cable Tips
  • 5G Technology World

Power Electronic Tips

  • Subscribe to our newsletter
  • Advertise with us
  • Contact us
  • About us
Follow us on TwitterAdd us on FacebookFollow us on YouTube Follow us on Instagram

Copyright © 2022 · WTWH Media LLC and its licensors. All rights reserved.
The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media.

Privacy Policy