Overview

Features and Benefits

  • Small Solution
    • 2.35V to 5.50V Operating Supply Voltage
    • Only One External Component Required
    • 125µA Operating Current
  • High Precision
    • Selectable 102.5% to 110% OV Monitors
    • Selectable 97.5% to 90% UV Monitors
    • ±0.8% Accuracy
    • 0.5% Step Size
    • ASIL D Compliance
  • Highly Integrated
    • MAX20478A - Two Voltage Monitoring Inputs
    • MAX20478B - Three Voltage Monitoring Inputs
    • Windowed Watchdog
    • OTP Configuration with Error-Correcting Code
    • Programmable RESET1 and RESET2 Pins
  • 10-Pin Side-Wettable TDFN with Exposed Pad (3mm x 3mm)
  • AEC-Q100 Qualified
  • -40°C to +125°C Operating Temperature

Product Details

The MAX20478 is a complete ASIL D-compliant System-on-a-Chip (SoC) voltage monitor with two or three voltage monitor inputs. Inputs 1 and 2 can be configured to monitor a voltage between 0.5V and 3.6875V in 12.5mV steps, while input 3 can be configured to monitor a voltage between 0.5V to 5.6V in 20mV steps. Each input has programmable OV/UV thresholds of between 2.5% and 10% with ±0.8% accuracy. The MAX20478 also contains a programmable windowed watchdog.

The MAX20478 significantly reduces system size and component count, while improving reliability, compared to separate ICs or discrete components. The device is designed to operate over the ambient temperature range of -40°C to +125°C.

Applications

  • Advanced Driver-Assistance Systems
  • Autonomous Driving Processing Systems
  • Power System Supervision and Microcontroller Unit/System-on-a-Chip Monitoring
  • Remote Sensor Modules

Product Categories

Markets and Technologies

Complete documentation is available upon completion of a Non-Disclosure Agreement (NDA). To request an NDA, click here.

Comparable Parts Click to see all in Parametric Search

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Documentation & Resources

  • View All (2)
  • Videos (1)
  • Technical Articles (1)
    • Document Type

    Reference Designs (1)

    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

    MAX20478 Material Declaration
    Quality And Reliability
    Symbols and Footprints

    Support & Discussions

    MAX20478 Contact ADI Technical Support »
    MAX20478 Ask your question »
    MAX20478 Contact ADI Technical Support » MAX20478 Ask your question »

    Sample & Buy


    Ordering FAQs


    See our Ordering FAQs for answers to questions about online orders, payment options and more.

     

    Buy Now Pricing


    (**) Displayed Buy Now Price and Price Range is based on small quantity orders.

     

    List Pricing


    (*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

     

    Lead Times


    Please see the latest communication from our CCO regarding lead times.

     

    Sampling


    Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.


    Price Table Help

     

    Evaluation Boards

    Pricing displayed is based on 1-piece.

    Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.