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LTC6804-1/LTC6804-2: Multicell Battery Monitors Data Sheet10/31/2016PDF965K
LTC6804-2
12 Channel Multicell Battery Monitor with Addressable Interface, Generation 3
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Overview
Features and Benefits
- 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
Product Details
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
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
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R525 Reliability Data3/26/2018PDF87K
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| LTC6804HG-2#3ZZPBF | Material Declaration | Reliability Data | 48-Lead SSOP | |
| LTC6804HG-2#3ZZTRPBF | Material Declaration | Reliability Data | 48-Lead SSOP | |
| LTC6804HG-2#PBF | Material Declaration | Reliability Data | 48-Lead SSOP | |
| LTC6804HG-2#TRPBF | Material Declaration | Reliability Data | 48-Lead SSOP | |
| LTC6804IG-2#3ZZPBF | Material Declaration | Reliability Data | 48-Lead SSOP | |
| LTC6804IG-2#3ZZTRPBF | Material Declaration | Reliability Data | 48-Lead SSOP | |
| LTC6804IG-2#PBF | Material Declaration | Reliability Data | 48-Lead SSOP | |
| LTC6804IG-2#TRPBF | Material Declaration | Reliability Data | 48-Lead SSOP | |
| Wafer Fabrication Data | R525 Reliability Data |
PCN-PDN Information
Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.
Support & Discussions
LTC6804-2 Discussions
LTC6804-2 Non-linear/Incorrect Voltage Readings
11 week(s) ago in Battery Management System
Question about Broadcast command of LTC6811-2 (with addressable interface)
17 week(s) ago in Battery Management System
Sample & Buy
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Lead Times
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Evaluation Boards
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.