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Alternative Parts

LTC2943
LTC2943

Multicell Battery Gas Gauge with Temperature, Voltage and Current Measurement

LTC2943-1
LTC2943-1

1A Multicell Battery Gas Gauge with Temperature, Voltage and Current Measurement

Overview

Features and Benefits

  • Measures Accumulated Battery Charge and Discharge
  • 3.6V to 60V Operating Range for Multiple Cells
  • 14-Bit ADC Measures Voltage, Current and Temperature
  • 1% Voltage, Current and Charge Accuracy
  • ±50mV Sense Voltage Range
  • High Side Sense
  • I2C Interface/SMBus Interface
  • General Purpose Measurements for Any Battery Chemistry and Capacity
  • Configurable Alert Output/Charge Complete Input
  • Quiescent Current Less Than 150μA
  • Small 8-Lead 3mm × 3mm DFN Package

Product Details

The LTC2944 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 60V. 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 on-board I2C/SMBus Interface.

The LTC2944 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. The LTC2944 requires only a single low value sense resistor to set the measured current range.

Applications

  • Electric and Hybrid Electric Vehicles
  • Power Tools
  • Electric Bicycles, Motorcycles, Scooters
  • High Power Portable Equipment
  • Photo Voltaics
  • Backup Battery Systems

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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Documentation & Resources

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  • Data Sheets (1)
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  • Press Releases (1)
  • Technical Articles (1)
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    Tools & Simulations

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    Linduino code repository on GitHub and instructions on how to use the code.

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    Linduino

    Code Files

    LTC2944 - Linduino Header File
    LTC2944 - Linduino CPP File
    LTC2944 - DC1812AB.ino File

    Design Resources

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    LTC2944 Material Declaration
    Quality And Reliability
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    PCN-PDN Information

    Select Model
    • LTC2944CDD#PBF Production
    • LTC2944CDD#TRPBF Production
    • LTC2944IDD#3ZZPBF Production
    • LTC2944IDD#PBF Production
    • LTC2944IDD#TRPBF Production

    Support & Discussions

    LTC2944 Discussions

    RE: DC590B & DC2094A Msg : Cannot load COM module for the device
    RE: Cannot load COM Module
    All LTC2944 Discussions
    LTC2944 Contact ADI Technical Support »
    LTC2944 Ask your question »
    LTC2944 Contact ADI Technical Support » LTC2944 Ask your question »

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    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.