Demonstration circuit 1812A-B features the LTC2944. Demonstration circuit 1812A-C features the LTC2943-1. The LTC2943/LTC2943-1 has an operating range of 3.6V to 20V, while the LTC2944 has an operating range of 3.6V to 60V, making all three devices perfectly suited for multicel battery applications. A precision analog coulomb counter integrates current measured through a sense resistor between the battery’s positive terminal and the load or charger.
The LTC2943/LTC2943-1/LTC2944 has programmable high and low thresholds for all measured quantities. If a programmed threshold is exceeded, the device reports an alert using either the SMBus alert protocol or by setting a flag in the internal status register. The LTC2943 and LTC2944 require only a single low value sense resistor to set the measured current range. The DC1812A is a part of the QuikEval system for quick evaluation with a host controller through a PC using the DC590 or DC2026.
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