LTC2943CDD-1

Battery Management Overview

The LTC2943CDD-1 is a multicell battery gas gauge IC designed for measuring state of charge, voltage, current, and temperature. It operates within a 3.6V to 20V range, suitable for various multicell battery applications. The device integrates a precision analog coulomb counter that measures current through an external sense resistor. Voltage, current, and temperature are measured using an internal 14-bit No Latency Sigma-Delta ADC. Measurement data is stored in internal registers accessible via an SMBus/I2C interface.

Battery Management Feature Summary

• Integrates a precision analog coulomb counter for accurate cumulative charge measurement
• Features an internal 14-bit No Latency Sigma-Delta ADC for simultaneous voltage, current, and temperature sensing
• Supports high-side current detection with a wide sense voltage range
• Provides configurable alert outputs and charging completion inputs via the I2C/SMBus interface

Battery Management Applications

• Electric power tools
• Electric bicycles
• Portable medical devices
• Video cameras

Battery Management Procurement Notes

Verify the specific suffix 'CDD-1' against official Analog Devices documentation to confirm pinout compatibility and functional specifications. Ensure the procurement source provides valid traceability documents. Cross-reference the manufacturer part number with the latest datasheet revision to avoid obsolete or variant components.

Battery Management Selection Notes

Select this component for applications requiring accurate fuel gauging in multicell battery packs operating between 3.6V and 20V. Consider the 8-pin DFN package size and low static current consumption. Verify that the system supports the required I2C/SMBus communication protocol and can accommodate the necessary external sense resistor for current integration.

Battery Management Part Context

This part belongs to the LTC294x family of battery fuel gauges from Analog Devices. It is specifically engineered for portable products where precise monitoring of battery health and remaining capacity is critical. The device complements other models like the LTC2943 and LTC2944 by offering a balance of accuracy and interface simplicity for standard voltage battery systems.

Battery Management Replacement Considerations

Direct substitutes include the LTC2943CDD#PBF and LTC2943IDD#TRPBF. Verify pin compatibility and software register mapping before replacement. Alternative evaluation boards such as DC1812A-A may be used for testing equivalent functionality.