LTC6804-1

Features nn Measures Up to 12 Battery Cells in Series nn Stackable Architecture Supports 100s of Cells nn Built-In isoSPI™ Interface: 1Mbps Isolated Serial Communications Uses a Single Twisted Pair, Up to 100 Meters Low EMI Susceptibility and Emissions nn 1.2mV Maximum Total Measurement Error nn 290µs to Measure All Cells in a System nn Synchronized Voltage and Current Measurement nn 16-Bit Delta-Sigma ADC with Frequency Programmable 3rd Order Noise Filter nn Engineered for ISO26262 Compliant Systems nn Passive Cell Balancing with Programmable Timer nn 5 General Purpose Digital I/O or Analog Inputs: Temperature or other Sensor Inputs Configurable as an I2C or SPI Master nn 4μA Sleep Mode Supply Current nn 48-Lead SSOP Package Applications nn Electric and Hybrid Electric Vehicles nn Backup Battery Systems nn Grid Energy Storage nn High Power Portable Equipment LTC6804-1/LTC6804-2 Multicell Battery Monitors Description The LTC®6804 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 f...