1. Products
  2. Power Management
  3. Battery Management
  4. Multicell Battery Stack Monitor
  5. AD8280

Data Sheet Rev. E
User Guides
CN 1 View All
Circuit Note
CN 2 View All
FPGA/HDL
2 View All

Overview

Features and Benefits

  • Wide supply voltage range: 6.0 V to 30.0 V
  • Multiple inputs can monitor 3 to 6 cell voltages and 2 temperatures
  • Adjustable threshold levels: overvoltage, undervoltage, overtemperature
  • Alarm options: separate or shared alarms
  • Extended temperature range performance
    • −40°C ≤ TA ≤ +105°C
  • Can be daisy-chained
  • Internal reference
  • Powered from battery stack
  • LDO available to power isolator
  • Qualified for automotive applications
  • Extensive self-test feature aids in meeting ASIL/SIL requirements

Product Details

The AD8280 is a hardware-only safety monitor for lithium ion battery stacks. The device has inputs to monitor six battery cells and two temperature sensors (either NTC or PTC thermistors). The device is designed to be daisy-chained with additional AD8280 devices to monitor a stack of significantly more than six cells without the need for numerous isolators. The output can be configured for an independent or shared alarm state.

The AD8280 functions independently from a primary monitor and contains a reference and LDO, both of which are powered completely from the battery cell stack. The reference, in conjunction with external resistor dividers, establishes trip points for the overvoltages and undervoltages. Each cell channel contains programmable deglitching circuitry to prevent alarms from transient input levels.

The AD8280 also has two digital pins that can select various combinations of inputs in the case where fewer than six cells are to be monitored. Most important, it has a self-test feature, making it suitable for high reliability applications, such as automotive hybrid electric vehicles or higher voltage industrial usage, such as uninterruptible power supplies. The AD8280 can function over a temperature range of −40°C to +105°C.

Applications

  • Lithium ion battery backup monitor and threshold detection
  • Electric and hybrid electric vehicle
  • Industrial vehicle
  • Uninterruptible power supply
  • Wind and solar

Product Categories

Markets and Technologies

Design News 2011 Golden Mousetrap Awards

ADI's AD8280 won the power management sub-category for the development of a new chip that monitors the voltage and temperature of lithium-ion battery stacks in hybrid and electric vehicles.

Comparable Parts Click to see all in Parametric Search

Product Lifecycle icon-not-recommended Not Recommended for New Designs

This designates products ADI does not recommend broadly for new designs.

Evaluation Kits (1)

Documentation & Resources

  • View All (7)
  • Data Sheets (1)
  • User Guides (1)
  • Circuit Note (2)
  • Technical Articles (3)
    • Document Type

    Software & Systems Requirements

    FPGA/HDL

    WIKI

    BeMicro FPGA Project for CN0235 with Nios driver
    WIKI

    CN0235 FMC-SDP Interposer & Evaluation Board / Xilinx KC705 Reference Design

    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.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    AD8280WASTZ Material Declaration Reliability Data 48-Lead LQFP (7mm x 7mm)
    AD8280WASTZ-RL Material Declaration Reliability Data 48-Lead LQFP (7mm x 7mm)
    Wafer Fabrication Data

    PCN-PDN Information

    Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.

    Select Model for PCN Information
    • AD8280WASTZ Production
    • AD8280WASTZ-RL Production

    Support & Discussions

    AD8280 Discussions

    RE: AD8280 self-test content
    RE: AD8280 - Hysteresis on OV, UV and OT Trip Points
    RE: AD8280:What is the LDO min overhead voltage
    All AD8280 Discussions
    AD8280 Contact ADI Technical Support »
    AD8280 Ask your question »
    AD8280 Contact ADI Technical Support » AD8280 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.

    •