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
AEC-Q100 data available for specific packages
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 |
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 Now • Request Samples | ||||||
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 | |||
Designed for Automotive and Transportation Applications
AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports 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 Now • Request Samples | ||||||
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:
- LTspice - A powerful SPICE simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators
- LTpowerCAD - A complete power supply selection, synthesis and design tool
- LTpowerPlay - A development environment supporting Linear Technology's Digital Power System Management (PSM) products
- 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
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
