LTC6804-1
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LTC6804-1

12 Channel Multicell Battery Monitor with Daisy Chain Interface, Generation 3

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Part Details
Part Models 8
1ku List Price Starting From $14.72
Features
  • Measures Up to 12 Battery Cells in Series
  • Stackable Architecture Supports 100s of Cells
  • Built-In isoSPI Interface:
    • 1Mbps Isolated Serial Communications
    • Uses a Single Twisted Pair, Up to 100 Meters
    • Low EMI Susceptibility and Emissions
  • 1.2mV Maximum Total Measurement Error
  • 290μs to Measure All Cells in a System
  • Synchronized Voltage and Current Measurement
  • 16-Bit Delta-Sigma ADC with Frequency Programmable 3rd Order Noise Filter
  • Engineered for ISO26262 Compliant Systems
  • Passive Cell Balancing with Programmable Timer
  • 5 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
  • 48-Lead SSOP Package
Additional Details
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The LTC6804 is a 3rd generation multicell battery stack monitor that measures up to 12 series connected battery cells with a total measurement error of less than 1.2mV. The cell measurement range of 0V to 5V makes the LTC6804 suitable for most battery chemistries. All 12 cell voltages can be captured in 290μs, and lower data acquisition rates can be selected for high noise reduction.

Multiple LTC6804 devices can be connected in series, permitting simultaneous cell monitoring of long, high voltage battery strings. Each LTC6804 has an isoSPI interface for high speed, RF-immune, local area communications. Using the LTC6804-1, multiple devices are connected in a daisy-chain with one host processor connection for all devices. Using the LTC6804-2, multiple devices are connected in parallel to the host processor, with each device individually addressed.

Additional features include passive balancing for each cell, an onboard 5V regulator, and 5 general purpose I/O lines. In sleep mode, current consumption is reduced to 4μA. The LTC6804 can be powered directly from the battery, or from an isolated supply.

Applications

  • Electric and Hybrid Electric Vehicles
  • Backup Battery Systems
  • Grid Energy Storage
  • High Power Portable Equipment
Part Models 8
1ku List Price Starting From $14.72

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Documentation

Documentation

Video

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

PCN

Jul 31, 2020

- 20_0245

Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

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Nov 18, 2019

- 19_0266

Laser Top Mark for SSOP36/44/48 Packages assembled in ADPG and UTAC

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PRODUCTION

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Filter by Model

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Part Models

Product Lifecycle

PCN

Jul 31, 2020

- 20_0245

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Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

LTC6804HG-1#3ZZPBF

PRODUCTION

LTC6804HG-1#3ZZTRPBF

PRODUCTION

LTC6804HG-1#PBF

PRODUCTION

LTC6804HG-1#TRPBF

PRODUCTION

LTC6804IG-1#3ZZPBF

PRODUCTION

LTC6804IG-1#3ZZTRPBF

PRODUCTION

LTC6804IG-1#PBF

PRODUCTION

LTC6804IG-1#TRPBF

PRODUCTION

Nov 18, 2019

- 19_0266

arrow down

Laser Top Mark for SSOP36/44/48 Packages assembled in ADPG and UTAC

LTC6804HG-1#3ZZPBF

PRODUCTION

LTC6804HG-1#3ZZTRPBF

PRODUCTION

LTC6804HG-1#PBF

PRODUCTION

LTC6804HG-1#TRPBF

PRODUCTION

LTC6804IG-1#3ZZPBF

PRODUCTION

LTC6804IG-1#3ZZTRPBF

PRODUCTION

LTC6804IG-1#PBF

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 2

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DC1894B

LTC6804-1 Demo Board | 12-Channel Battery Stack Monitor with Daisy-chain Interface

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DC1894B

LTC6804-1 Demo Board | 12-Channel Battery Stack Monitor with Daisy-chain Interface

LTC6804-1 Demo Board | 12-Channel Battery Stack Monitor with Daisy-chain Interface

Product Detail

Demonstration circuit 1894B is a daisy-chainable isoSPI battery-stack monitor featuring the LTC6804-1. These boards can be linked through a 2-wire isolated serial interface to monitor any number of cells on a stack.


 


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DC1941D

LTC6820 isoSPI Demoboard (DC590B required)

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DC1941D

LTC6820 isoSPI Demoboard (DC590B required)

LTC6820 isoSPI Demoboard (DC590B required)

Product Detail

Demonstration circuit 1941 is an isoSPI™ transceiver board, based on Linear Technology’s LTC6820. The LTC6820 provides a method of interconnecting standard serial peripheral interface (SPI) devices using a single twisted pair connection. This proprietary 2-wire interface is called isoSPI. The LTC6820 encodes SPI signals, up to 1Mbps, into a differential isoSPI signal which is transmitted via a simple pulse transformer through a twisted pair. At the other end of the twisted pair, the isoSPI signal can be translated back to SPI (using another LTC6820).


 


Tools & Simulations

Tools & Simulations 1

Linduino

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.

Purchase Linduino

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