LTC2943

PRODUCTION

Multicell Battery Gas Gauge with Temperature, Voltage and Current Measurement

Data Sheet Product Selection Table
Part Models
4
1ku List Price
Starting From $2.84
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Part Details

  • Measures Accumulated Battery Charge and Discharge
  • 3.6V to 20V Operating Range for Multiple Cells Application
  • 14-Bit ADC Measures Voltage, Current and Temperature
  • 1% Voltage, Current and Charge Accuracy
  • ±50mV Sense Voltage Range
  • 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
LTC2943
Multicell Battery Gas Gauge with Temperature, Voltage and Current Measurement
Total Charge Error vs Differential Sense Voltage Product Package 1
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Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Technical Articles 2

Data Sheet

This is the most up-to-date revision of the Data Sheet.

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Software Resources

Device Drivers 1

Hardware Ecosystem

Parts Product Life Cycle Description
LTC2943-1
Obsolete 1A Multicell Battery Gas Gauge with Temperature, Voltage and Current Measurement
LTC2944
PRODUCTION 60V Battery Gas Gauge with Temperature, Voltage and Current Measurement
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Tools & Simulations

LTspice 1

Models for the following parts are available in LTspice:

  • LTC2943

Linduino 3

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

eval board
schematic 1
schematic 2
schematic 3
schematic 4
schematic 5
DC1812A-A

LTC2943 Demo Board | 20VIN, 0.5A Battery Gas Gauge w/ Ext RSENSE (requires DC2026)

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Product Details

Demonstration circuit 1812A (Figure 1) features the LTC2943. The LTC2943 has an operating range of 3.6V to 20V making it perfectly suited for multicell 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 default value assembled on the DC1812A-A is 100mΩ for a maximum current measurement of 500mA. The LTC2943 measures voltage, current and temperature with an internal 14-bit No Latency ΔΣ™ ADC. The measurements are stored in internal registers accessible via the onboard SMBus/I2C interface.


 
DC1812A-A
LTC2943 Demo Board | 20VIN, 0.5A Battery Gas Gauge w/ Ext RSENSE (requires DC2026)
DC1812A-A Demo Board DC1812A-A Demo Board DC1812A-A Demo Board DC1812A-A Demo Board DC1812A - Schematic

Latest Discussions

23 Weeks Ago
RE: LTC2943 stops responding when discharging current
44 Weeks Ago
RE: Automatic mode timing for LTC2943?
44 Weeks Ago
RE: UVLO voltage for LTC2943?
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