LTC2941-1

Obsolete

1A I²C Battery Gas Gauge with Internal Sense Resistor

Part Models: 3
1ku List Price: price unavailable

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Part Details

Indicates Accumulated Battery Charge and Discharge
SMBus/I²C Interface
Integrated 50mΩ High Side Sense Resistor
±1A Sense Current Range
High Accuracy Analog Integration
1% Charge Accuracy
Configurable Alert Output/Charge Complete Input
2.7V to 5.5V Operating Range
Quiescent Current Less than 100μA
Small 6-Pin 2mm × 3mm DFN package

The LTC2941-1 measures battery charge state in battery-powered handheld PC and portable product applications. Its operating range is perfectly suited for single cell Li-Ion batteries. A precision coulomb counter integrates current through an internal sense resistor between the battery’s positive terminal and the load or charger. The measured charge is stored in internal registers. An SMBus/I²C interface accesses and configures the device.

The LTC2941-1 features programmable high and low thresholds for accumulated charge. If a threshold is exceeded, the device communicates an alert using either the SMBus alert protocol or by setting a flag in the internal status register.


	Integrated Sense Resistor
LTC2941	No
LTC2941-1	Yes

Applications

Low Power Handheld Products
Cellular Phones
MP3 Player
Cameras
GPS

Part Models: 3
1ku List Price: price unavailable

Documentation

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. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LTC2941CDCB-1#TRPBF	6-Lead DFN (2mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2941IDCB-1#TRMPBF	6-Lead DFN (2mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2941IDCB-1#TRPBF	6-Lead DFN (2mm x 3mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 29, 2020 - 20_0067 Obsolescence of LTC2941-1, LTC2942-1 and LTC2943-1 products
		PDN20_0067_Form Material_Report
LTC2941CDCB-1#TRPBF	Obsolete
LTC2941IDCB-1#TRMPBF	Obsolete
LTC2941IDCB-1#TRPBF	Obsolete

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

Hardware Ecosystem

Parts	Product Life Cycle	Description
Battery Fuel Gauge and Coulomb Counter 1
LTC2943	PRODUCTION	Multicell Battery Gas Gauge with Temperature, Voltage and Current Measurement
I²C Isolators 1
LTM2883	PRODUCTION	SPI/Digital or I²C μModule Isolator with Adjustable ±12.5V and 5V Regulated Power

Tools & Simulations

LTspice 1

LTC2941-1 - Battery Management

Models for the following parts are available in LTspice:

LTC2941
LTC2941-1

Linduino 3

Design Tool 1

LTC2941/LTC2942 - Calculator Tool

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.

Linduino is Analog Devices’ Arduino compatible system for developing and distributing firmware libraries and example code for our integrated circuits. Each Linduino-supported product includes an example main program, defined in the LTSketchbook/Part Number folder and driver code, defined in the LTSketchbook/libraries folder.

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

Purchase Linduino

Evaluation Kits

LTC2941-1 Demo Board | 2.7V to 5.5V Battery Gas Gauge with I2C (Requires DC590B)

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Product Details

Demonstration circuit 1496B-C features the LTC2941-1, a battery gas gauge with an internal 50mΩ sense resistor that measures battery charge and discharge for currents up to 1A. The 2.7V to 5.5V operating range is perfectly suited for single cell Li-Ion batteries.

A precision analog coulomb counter integrates current through the sense resistor between the battery’s positive terminal and the load or charger. The measured charge is stored in internal registers accessible via the on-board SMBus/I²C interface.

Resources

DC1496B - Schematic
27.00K

DC1496B - Demo Manual
414.00K

DC1496B - Design Files
611.00K

Latest Discussions

5 Years Ago

LTC2941-1

Part Details

Documentation

Data Sheet 1

Reliability Data 1

User Guide 1

Technical Articles 1

Product Selector Card 3