LTC6802-1

description

LTC^®The 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 is capable of measuring up to 12 series connected cells with input common-mode voltages up to 60V. Also, multiple LTC6802-1 devices can be connected in series to monitor the voltage of each cell in a long string of series connected cells. Furthermore, by using a unique level-shifting serial interface, multiple devices can be daisy-chained without the need for optocouplers or optoisolators.

When multiple LTC6802-1 devices are connected in series, they can operate simultaneously, allowing voltage measurements for all cells in the stack to be completed in less than 13ms.

To minimize power, the LTC6802-1 provides a measurement mode designed to simply monitor each cell for overvoltage and undervoltage conditions. A standby mode is also available.

Each battery input has an associated MOSFET switch that discharges the overcharged battery.

For large battery pack applications that require individually addressable serial communication, refer to the LTC6802-2.

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• Electric and hybrid vehicles
• High-power portable devices
• Backup battery system
• High voltage data acquisition system