LTC6801 - Independent Multicell Battery Stack Fault Monitor

Features

  • Monitors Up to 12 Li-Ion Cells in Series
    (60V Max)
  • Stackable Architecture Enables > 1000V Systems
  • 1% Maximum Overvoltage Detection Level Error
  • Adjustable Overvoltage and Undervoltage Detection
  • Self Test Features Guarantee Accuracy
  • Robust Fault Detection Using Differential Signals
  • Simple Pin-Strapped Confi guration Allows Battery Monitoring without a Microcontroller
  • 15.5ms to Monitor All Cells in a System
  • Programmable Response Time
  • Two Temperature Monitor Inputs
  • Low Power Idle Mode
  • 36-Lead SSOP Package
Designed for Automotive and Transportation Applications
AEC-Q100 generic family data available for specific packages


Typical Application

LTC6801 Typical Application
LTC6801 Typical Application

Description

The LTC6801 is a multicell battery monitoring IC incorporating a 12-bit ADC, a precision voltage reference, sampled comparator, and a high voltage input multiplexer. The LTC6801 can monitor as many as 12 series connected battery cells for overvoltage, undervoltage, and overtemperature conditions, indicating whether the cells are within specified parameters. The LTC6801 generates a clock output when no fault conditions exist. Differential clocking provides high noise immunity and ensures that battery stack fault conditions cannot be hidden by frozen bits or short circuit conditions.

Each LTC6801 can operate with a battery stack voltage up to 60V and multiple LTC6801 devices can be stacked to monitor each individual cell in a long battery string. When multiple devices are stacked, the status signal of each LTC6801 can be daisy-chained, without opto-couplers or isolators, providing a single status output for the entire battery string.

The LTC6801 is configurable by external pin strapping. Adjustable overvoltage and undervoltage thresholds support various Li-Ion chemistries. Selectable measurement times allow users to save power.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LTC6801HG#PBF SSOP-36 G H 05-08-1640 (G36) Yes
LTC6801HG#TRPBF SSOP-36 G H 05-08-1640 (G36) Yes
LTC6801IG#PBF SSOP-36 G I 05-08-1640 (G36) Yes
LTC6801IG#TRPBF SSOP-36 G I 05-08-1640 (G36) Yes


LTC6801 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC6801HG#PBF SSOP-36 H $6.99 $5.01 Yes
LTC6801HG#TRPBF SSOP-36 H $5.07 Yes
LTC6801IG#PBF SSOP-36 I $6.24 $4.48 Yes
LTC6801IG#TRPBF SSOP-36 I $4.54 Yes
Buy NowRequest Samples
* The USA 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 Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1469B LTC6801 | Demo Board $75.00
Buy Now
Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

Please contact your local sales representative for more information regarding reliability reports and AEC-Q100 data or to inquire about parts that are not included. For more information, view our Automotive and Transportation page

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC6801HG#PBF SSOP-36 H $6.99 $5.01 Yes
LTC6801HG#TRPBF SSOP-36 H $5.07 Yes
LTC6801IG#PBF SSOP-36 I $6.24 $4.48 Yes
LTC6801IG#TRPBF SSOP-36 I $4.54 Yes
Buy NowRequest Samples
* The USA 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 Linear Technology sales office or authorized distributor.

Applications

  • Redundant Battery Monitor
  • Hybrid Electric Vehicles
  • Battery Backup Systems
  • Power Systems Using Multiple Battery Cells

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Design Tools

Linear Technology provides a variety of custom design simulation tools and device models to allow even novice designers to quickly and easily evaluate circuits using high performance switching regulators, amplifiers, data converters, filters and more. Please visit our Design Tools page to view and download:

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  • PScope & QuikEval - USB-based product demonstration and data acquisition system for use with our ADCs, DACs, and more
  • Linduino - Arduino compatible system for developing and distributing firmware libraries and example code
  • LinearLab Tools - A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards
  • And More!

Technical Support