AD8280
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AD8280

Lithium Ion Battery Safety Monitor

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Part Details
Part Models 2
1ku List Price Starting From $4.38
Features
  • 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
Additional Details
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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
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.

Part Models 2
1ku List Price Starting From $4.38

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD8280WASTZ
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AD8280WASTZ-RL
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Product Lifecycle

PCN

Mar 1, 2016

- 16_0010

AD8280 Metal Mask Revision and Data Sheet Specification Changes

Apr 25, 2011

- 10_0349

Metal Mask Revision and Datasheet Change for AD8280

AD8280WASTZ

PRODUCTION

AD8280WASTZ-RL

PRODUCTION

Filter by Model

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Part Models

Product Lifecycle

PCN

Mar 1, 2016

- 16_0010

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AD8280 Metal Mask Revision and Data Sheet Specification Changes

Apr 25, 2011

- 10_0349

arrow down

Metal Mask Revision and Datasheet Change for AD8280

AD8280WASTZ

PRODUCTION

AD8280WASTZ-RL

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

EVAL-AD8280

AD8280 Evaluation Board

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EVAL-AD8280

AD8280 Evaluation Board

AD8280 Evaluation Board

Product Detail

This (UG-175) user guide describes the evaluation boards for the AD8280, which is a complete back-up monitor for lithium ion battery monitoring, integrating multiple voltages, and temperature input channels. Full details of the part, its specifications and its operating parameters are available in the AD8280 data sheet available on-line and should be consulted in conjunction with the (UG-175) user guide when using the evaluation board.


Reference Designs

Reference Designs 1

Lithium Ion Battery Monitoring and Protection System

Fully Isolated Lithium Ion Battery Monitoring and Protection System

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CN0235

Fully Isolated Lithium Ion Battery Monitoring and Protection System

CN0235

Circuits from the lab

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Fully Isolated Lithium Ion Battery Monitoring and Protection System

Features and Benefits

  • Measure up to 48 battery channels
  • 1.6mV Cell Voltage Accuracy
  • Alarm interrupts for different voltage conditions
  • Battery cell balancing for load sharing
  • Lithium battery management system
View Detailed Reference Design external link

Design & Integration Tools

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