LTC6810-1

PRODUCTION

6 Channel Multicell Battery Monitor with Daisy Chain Interface, Generation 4

Data Sheet (Rev. B) Product Selection Table

Part Models: 4
1ku List Price: Starting From $6.97

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Overview

AEC-Q100 Qualified for Automotive Applications
Measures Up to 6 Battery Cells in Series
1.8mV Maximum Total Measurement Error
Stackable Architecture Supports 100s of Cells
290μs to Measure All Cells in a System
Built-in isoSPI^™ Interface
- 1Mb Isolated Serial Communications
- Uses Single Twisted Pair, Up to 100 Meters
- Low EMI Susceptibility and Emissions
- Bidirectional for Broken Wire Protection
Guaranteed Performance Down to 5V

Performs Redundant Cell Measurements
Engineered for ISO 26262 Compliant Systems
Passive Cell Balancing with Programmable Pulse Width Modulation
4 General Purpose Digital I/O or Analog Inputs
- Temperature or Other Sensor Inputs
- Configurable as an I²C or SPI master
4μA Sleep Mode Supply Current
44-Lead SSOP Package

The LTC6810 is a multicell battery stack monitor. The LTC6810 measures up to 6 series-connected battery cells with a total measurement error of less than 1.8mV. The cell measurement range of 0V to 5V makes the LTC6810 suitable for most battery chemistries. All 6 cells can be measured in 290µs, and lower data acquisition rates can be selected for high noise reduction.

Multiple LTC6810-1 devices can be connected in series, permitting simultaneous cell monitoring of long, high voltage battery strings. Each LTC6810 has an isoSPI interface for high speed, RF-immune, long distance communications. Using the LTC6810-1, multiple devices are connected in a daisy chain with one host processor connection for all devices. The LTC6810-1 supports bidirectional operation, allowing communication even with a broken wire. Using the LTC6810-2, multiple devices are connected in parallel to the host processor, with each device individually addressed.

The LTC6810 can be powered directly from the battery stack or from an isolated supply. The LTC6810 includes passive balancing for each cell, with PWM duty cycle control for each cell and the ability to perform redundant cell measurements. Other features include an onboard 5V regulator, 4 general purpose I/O lines and a sleep mode in which current consumption is reduced to 4µA.

APPLICATIONS

Electric and Hybrid Electric Vehicles
Backup Battery Systems
Grid Energy Storage
High Power Portable Equipment

Part Models: 4
1ku List Price: Starting From $6.97

Documentation

Data Sheet 1

LTC6810-1/LTC6810-2: 6 Channel Battery Stack Monitors Data Sheet (Rev.B) 10/04/2018

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 Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC6810HG-1#3ZZPBF	44-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6810HG-1#3ZZTRPBF	44-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6810IG-1#3ZZPBF	44-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6810IG-1#3ZZTRPBF	44-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Apr 27, 2022 - 22_0035 LTC6810-1, LTC6810-2 Die Revision
		PCN22_0035_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC6810HG-1#3ZZPBF	PRODUCTION
LTC6810HG-1#3ZZTRPBF	PRODUCTION
LTC6810IG-1#3ZZPBF	PRODUCTION
LTC6810IG-1#3ZZTRPBF	PRODUCTION
Nov 18, 2019 - 19_0266 Laser Top Mark for SSOP36/44/48 Packages assembled in ADPG and UTAC
		PCN19_0266_Form Material_Report Detailed Parts List
LTC6810HG-1#3ZZPBF	PRODUCTION
LTC6810HG-1#3ZZTRPBF	PRODUCTION
LTC6810IG-1#3ZZPBF	PRODUCTION
LTC6810IG-1#3ZZTRPBF	PRODUCTION
Jun 12, 2019 - 19_0127 LTC6810-1,LTC6810-2 Datasheet Change
		PCN19_0127_Form Material_Report Delta Qualification Matrix Datasheet Specification Comparison
LTC6810HG-1#3ZZPBF	PRODUCTION
LTC6810HG-1#3ZZTRPBF	PRODUCTION
LTC6810IG-1#3ZZPBF	PRODUCTION
LTC6810IG-1#3ZZTRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

Linduino 1

LTC6810 Linduino Files

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

Linduino code repository on GitHub and instructions on how to use the code.

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Evaluation Kits

LTC6810-1 Demo Board | 6-Channel Battery-Stack Monitor with Daisy-Chain Interface

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Product Details

Demonstration circuit 2515B features the LTC6810-1, a 6-channel battery-stack monitor. Multiple boards can be linked through a 2-wire isolated serial interface (isoSPI^™) to monitor a long series of cells in a stack. The DC2515B demo board also features reversible isoSPI enabling a redundant communication path. The PCB, components, and DuraClik connectors are optimized for Low EMI Susceptibility and Emissions.

The DC2515B can communicate to a PC by connecting a DC2792B dual master isoSPI together with DC2026 Linduino^® One. The DC2026 must be loaded with the appropriate program (called a sketch) to control the battery stack monitor IC and receive data through a USB serial port. The DC2026C provides a standard SPI interface which can be translated to isoSPI and then connected to a DC2515B isoSPI port (J4 or J5 connector). The DC2792B companion board provides two SPI-isoSPI channels for reversible operation.

Resources

DC2515B - Schematic
11/2/2021

DC2515B - Design Files
11/2/2021

DC2515B - Demo Manual (Rev.0)
2/11/2021

LTC6820 Demo Board | Dual Master isoSPI Adapter

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Product Details

The demonstration circuit DC2792B is an SPI serial to dual-port isoSPI adapter that uses a pair of multiplexed LTC6820 isoSPI transceivers and miniaturized isoSPI connectors (2 contact DuraClik). The board can functionally replace a DC1941 in cases where isoSPI battery-management (BMS) devices are being evaluated, but provides a second isoSPI master to exercise the reversible isoSPI feature where available. The SPI interface can be provided via the legacy 14-contact ribbon cable from either a DC590 or DC2026 USB adapter, or directly installed on the DC2026 as a Linduino shield. The two isoSPI ports are MAIN and AUXiliary, with activity of each indicated by blue LEDs. For use in place of DC1941 or non-reversible isoSPI networks, the MAIN port must be used. Power for the DC2792B comes indirectly from the USB port of the host computer, via the USB to serial adapter being used.

Resources

DC2792B - Demo Manual (Rev.0)
10/14/2020

DC2792B - Design Files
10/14/2020

DC2792B - Schematic
10/14/2020

OBSOLETE: LTC6820 Demo Board | Dual Master isoSPI Adapter

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Product Details

This evaluation board is obsolete and no longer recommended. The replacement board is the DC2792B.

Demonstration circuit DC2792A is an SPI serial to dual-port isoSPI adapter that uses a pair of multiplexed LTC6820 isoSPI transceivers. The board can replace a DC1941 in cases where isoSPI battery-management (BMS) devices are being evaluated, but provides a second isoSPI master to exercise the reversible isoSPI feature where available. The SPI interface can be provided via the legacy 14-contact ribbon cable from either a DC590 or DC2026 USB adapter, or directly installed on the DC2026 as a Linduino ‘shield’. The two isoSPI ports are MAIN and AUXiliary, with activity of each indicated by blue LEDs. For use in place of DC1941, the MAIN port must be used. Power for the DC2792A comes indirectly from the USB port of the host computer, via the USB to serial adapter being used.

Resources

DC2792A - Schematic
4/19/2019

DC2792A - Design Files
4/19/2019

DC2792A - Demo Manual (Rev.0)
6/11/2019

OBSOLETE: LTC6810-1 Demo Board | 6-Channel Battery Stack Monitor with Daisy-chain Interface

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Product Details

This evaluation board is obsolete and no longer recommended. The replacement board is the DC2515B.

Demonstration circuit 2515A includes the LTC6810-1, a 6 channel battery-stack monitor. Multiple DC2515A boards can be linked through a 2-wire isolated serial interface (isoSPI) to monitor a long series of cells in a stack.

The DC2515 can communicate to a PC by connecting directly to a DC2026 Linduino^® One. The DC2026 must be loaded with the appropriate program (called a “sketch”) to control the battery stack monitor IC and receive data through a USB serial port. The DC2026C provides a standard SPI interface which can be connected directly to a DC2515 board (J4 Connector). Or, the SPI can be translated to isoSPI and then connected to a DC2515 isoSPI port (J2/J1 connector). The DC1941 provides a single SPI-isoSPI channel, and the DC2792 provides two SPIisoSPI channels for reversible operation.