Alternative Parts

  • LTC2943
    LTC2943

    Multicell Battery Gas Gauge with Temperature, Voltage and Current Measurement

Overview

Features and Benefits

  • Measures Accumulated Battery Charge and Discharge
  • 3.6V to 20V Operating Range for Multiple Cells
  • Integrated 50mΩ High Side Sense Resistor
  • ±1A Current Sense Range
  • 14-Bit ADC Measures Voltage, Current and Temperature
  • 1% Voltage, Current and Charge Accuracy
  • High Side Sense
  • General Purpose Measurements for Any Battery Chemistry and Capacity
  • I2C/SMBus Interface
  • Configurable Alert Output/Charge Complete Input
  • Quiescent Current Less Than 120μA
  • Small 8-Lead 3mm × 3mm DFN Package

Product Details

The LTC2943-1 measures battery charge state, battery voltage, battery current and its own temperature in portable product applications. The wide input voltage range allows use with multicell batteries up to 20V. A precision coulomb counter integrates current through a sense resistor between the battery’s positive terminal and the load or charger. Voltage, current and temperature are measured with an internal 14-bit No Latency ΔΣ ADC. The measurements are stored in internal registers accessible via the onboard I2C/SMBus Interface.

The LTC2943-1 features programmable high and low thresholds for all four measured quantities. If a programmed threshold is exceeded, the device communicates an alert using either the SMBus alert protocol or by setting a flag in the internal status register.

Applications

  • Power Tools
  • Portable Medical Equipment
  • Video Cameras

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Tools & Simulations

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Models for the following parts are available in LTspice:

LTC2943

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Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits.

Linduino

Product Recommendations

LTC2943-1 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.