Linear LTC6803第二代电池监视解决方案

Linear 公司的LTC6803是第二代完整的电池监视器，包括有12位ADC，精密的基准电压，高电压输入复接器和1MHz串行接口。具有可堆栈的架构，每个器件可测试多达12个串接的电池或超级电容，总测试误差最大为0.25%,主要用于电力和混合动力汽车，大功率手持设备，备用电池系统和电动自行车，摩托车等。本文介绍了LTC6803主要特性，方框图，典型应用框图以及96节电池监视电路图和硬件关断电路方框图。

The LTCR6803 is a 2nd generation, complete battery monitoring IC that includes a 12-bit ADC, a precision voltage reference, a high voltage input multiplexer and a serial interface. Each LTC6803 can measure up to 12 series connected battery cells or supercapacitors. Many LTC6803 devices can be stacked to measure the voltage of each cell in a long battery string. Each LTC6803-2/LTC6803-4 has an individually addressable serial interface, allowing up to 16 LTC6803-2/LTC6803-4 devices to interface to one control processor and operate simultaneously. Each cell input has an associated MOSFET switch for discharging overcharged cells. The LTC6803-2 connects the bottom of the stack to V– internally. It is pin compatible with the LTC6802-2, providing a drop-in upgrade. The LTC6803-4 separates the bottom of the stack from V–, improving cell 1 measurement accuracy.
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