LTC6802-1 Multicell Battery Stack Monitor SSOP44

Description

LTC6802-1 Multicell Battery Stack Monitor SSOP44

This LTC6802-1 Multicell Battery Stack Monitor SSOP44 is a 1W SMD.

DESCRIPTION

Multicell Battery Stack Monitor The LTC®6802-1 is a complete battery monitoring IC that includes a 12-bit ADC, a precision voltage reference, a high voltage input multiplexer and a serial interface. Each LTC6802-1 can measure up to 12 series connected battery cells with an input common mode voltage up to 60V. In addition, multiple LTC6802-1 devices can be placed in series to monitor the voltage of each cell in a long battery string. The unique level-shifting serial interface allows the serial ports of these devices to be daisy-chained without opto couplers or isolators. When multiple LTC6802-1 devices are connected in series they can operate simultaneously, permitting all cell voltages in the stack to be measured within 13ms. To minimize power, the LTC6802-1 offers a measure mode, which simply monitors each cell for overvoltage and under voltage conditions. A standby mode is also provided. Each cell input has an associated MOSFET switch for discharging overcharged cells.

FEATURES

• Qualified for Automotive Applications
• Measures Up to 12 Li-Ion Cells in Series (60V Max)
• Stackable Architecture Enables >1000V Systems
• 0.25% Maximum Total Measurement Error
• 13ms to Measure All Cells in a System
• Cell Balancing:  On-Chip Passive Cell Balancing Switches  Provision for Off-Chip Passive Balancing
• Two Thermistor Inputs Plus On-Board Temperature Sensor
• 1MHz Daisy-Chainable Serial Interface
• High EMI Immunity
• Delta Sigma Converter with Built-In Noise Filter
• Open Wire Connection Fault Detection
• Low Power Modes n 44-Lead SSOP Package

APPLICATIONS

• Electric and Hybrid
• Electric Vehicles
• High Power Portable Equipment
• Backup Battery Systems
• High Voltage Data Acquisition Systems
• Datasheet

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