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LTC6813ILWE-1 DataSheet

LTC6813ILWE-1 DataSheet

Part No.
Part Marking
–40°C to 85°C
64-Lead Plastic eLQFP
File Size
3707 KB
90 Pages
Linear Technology
Upload Time
2022-05-16 14:51:05
Update Time
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LTC6813ILWE-1 Features

■ Measures Up to 18 Battery Cells in Series
■ 2.2mV Maximum Total Measurement Error
■ Stackable Architecture for High Voltage Systems
■ Built-In isoSPI™ Interface
 □ 1Mb Isolated Serial Communications
 □ Uses a Single Twisted Pair, Up to 100 Meters 
 □ Low EMI Susceptibility and Emissions
 □ Bidirectional for Broken Wire Protection
■ 290µs to Measure All Cells in a System
■ Synchronized Voltage and Current Measurement 
■ 16-Bit Delta-Sigma ADC with Programmable Noise Filter
■ Engineered for ISO 26262-Compliant Systems
■ Passive Cell Balancing Up to 200mA (Max) with Programmable Pulse-Width Modulation
 □ 9 General Purpose Digital I/O or Analog Inputs n Temperature or Other Sensor Inputs
 □ Configurable as an I2C or SPI Master
■ 6µA Sleep Mode Supply Current
■ 64-Lead eLQFP Package
■ AEC-Q100 Qualified for Automotive Applications

LTC6813ILWE-1 Applications

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

LTC6813ILWE-1 Description

LTC6813ILWE-1 is a multicell battery stack monitor that measures up to 18 series connected battery cells with a total measurement error of less than 2.2mV. The cell measurement range of 0V to 5V makes the LTC6813-1 suitable for most battery chemistries. All 18 cells can be measured in 290µs, and lower data acquisition rates can be selected for high noise reduction.

Multiple LTC6813-1 devices can be connected in series, permitting simultaneous cell monitoring of long, high voltage battery strings. Each LTC6813-1 has an isoSPI interface for high speed, RF immune, long distance communications. Multiple devices are connected in a daisy chain with one host processor connection for all devices. This daisy chain can be operated bidirectionally, ensuring communication integrity, even in the event of a fault along the communication path.

LTC6813ILWE-1 can be powered directly from the bat-tery stack or from an isolated supply. The LTC6813-1 includes passive balancing for each cell, with individual PWM duty cycle control for each cell. Other features include an onboard 5V regulator, nine general purpose I/O lines and a sleep mode, where current consumption is reduced to 6µA.

Related LTC6813ILWE-1 Datasheet

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3743Kb / 90P

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