LTC2949

PRODUCTION

Current, Voltage, and Charge Monitor for High Voltage Battery Packs

Data Sheet (Rev. A) Product Selection Table

Part Models: 4
1ku List Price: Starting From $24.22

Viewing:

Part Details

Measures Battery Stack Voltage, Current and Power
Indicates Accumulated Battery Charge and Energy
20-Bit Current Measurement with <1μV Offset
Built-In Isolated isoSPI^™ or SPI Interface
LTC68xx/ADBMS68xx Compatible, Supports Synchronous Measurements with Cell Monitors
Up to 12 Buffered Voltage Measurement Inputs
Up to 5 GPIOs, Configurable to Drive Ground, Supply or Toggling at 400kHz
High or Low Side Current Sense

0.3% Current and Voltage Accuracy
1% Energy and Charge Accuracy
True Average ADCs
I²C EEPROM Interface to Store Board Calibration Factors
Threshold Registers for all Measured Quantities
Engineered for ISO26262 Compliant Systems
Open Wire Detection on Input Pins
Available in 48-Lead LQFP Package
AEC-Q100 Qualified for Automotive Applications

Part Models: 4
1ku List Price: Starting From $24.22

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
LTC2949HLXE#3ZZPBF	48-Lead LQFP (7mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2949HLXE#3ZZTRPBF	48-Lead LQFP (7mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2949ILXE#3ZZPBF	48-Lead LQFP (7mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys
LTC2949ILXE#3ZZTRPBF	48-Lead LQFP (7mm x 7mm w/ EP)	Material Declaration Reliablity Data	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

May 4, 2022 - 22_0092 LTC2949 Die Revision Change
		PCN22_0092_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC2949HLXE#3ZZPBF	PRODUCTION
LTC2949HLXE#3ZZTRPBF	PRODUCTION
LTC2949ILXE#3ZZPBF	PRODUCTION
LTC2949ILXE#3ZZTRPBF	PRODUCTION
Oct 12, 2020 - 20_0273 LTC2949 Datasheet Change
		PCN20_0273_Form Material_Report Datasheet Specification Comparison Other Delta Qualification Matrix
LTC2949HLXE#3ZZPBF	PRODUCTION
LTC2949HLXE#3ZZTRPBF	PRODUCTION
LTC2949ILXE#3ZZPBF	PRODUCTION
LTC2949ILXE#3ZZTRPBF	PRODUCTION
Aug 27, 2020 - 20_0272 Additional Wafer Fab Location (Vanguard International Semiconductor, Taiwan) for LTC2949 and LTC7821
		PCN20_0272_Form Material_Report Delta Qualification Matrix Other Qualification Results Summary
LTC2949HLXE#3ZZPBF	PRODUCTION
LTC2949HLXE#3ZZTRPBF	PRODUCTION
LTC2949ILXE#3ZZPBF	PRODUCTION
LTC2949ILXE#3ZZTRPBF	PRODUCTION

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

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Evaluation Kits

LTC6820 Demo Board | Arduino Interface for isoSPI or Isolated CAN

Buy Now View Details

Product Details

Demonstration circuit 2617A implements the isoSPI and isolated CAN interface hardware on a single Arduino shield. It allows Arduino-compatible controller boards to communicate with isoSPI and/or CAN bus networks.

Resources

DC2617A - Demo Board Manual
1/18/2018

DC2617A - Design Files
1/18/2018

DC2617A - Schematic
1/18/2018

LTC2949 Demo Board | Current, Voltage & Charge Monitor for High Voltage Battery Packs

Buy Now View Details

Product Details

The DC2732A demonstrates a high voltage battery pack monitor based on the LTC2949. The LTC2949 is a high precision current, voltage, temperature, charge and energy meter for electrical and hybrid vehicles and other isolated current sense applications. It infers charge and energy flowing in and out of the battery pack by simultaneously monitoring the voltage across two sense resistors and the battery pack voltage.

Due to its compatible protocol, the LTC2949 can share the same communication bus with ADI battery stack monitors that contain the isoSPI^™ interface.

The LTC2949 is typically powered from an isolated supply and directly connected to the battery stack on the low or high side depending on the shunt position. Resistive high voltage dividers provide connections to high voltage terminals that need to be supervised.

All registered trademarks and trademarks are the property of their respective owners. Protected by U.S. patents, including Patents 8908779, 9182428, 92701.

Resources

DC2732A - Design Files
2/12/2020

DC2732A - Schematic
2/12/2020

DC2732A - Demo Manual
2/12/2020

LTC6820 isoSPI Demoboard (DC590B required)

Buy Now View Details

Product Details

Demonstration circuit 1941 is an isoSPI™ transceiver board, based on Linear Technology’s LTC6820. The LTC6820 provides a method of interconnecting standard serial peripheral interface (SPI) devices using a single twisted pair connection. This proprietary 2-wire interface is called isoSPI. The LTC6820 encodes SPI signals, up to 1Mbps, into a differential isoSPI signal which is transmitted via a simple pulse transformer through a twisted pair. At the other end of the twisted pair, the isoSPI signal can be translated back to SPI (using another LTC6820).