LTC6802-1

NOT RECOMMENDED FOR NEW DESIGNS

12 Channel Multicell Battery Monitor with Daisy Chain Interface, Generation 1

Data Sheet (Rev. B) Product Selection Table

Part Models: 4
1ku List Price: Starting From $12.96

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Overview

Qualified for Automotive Applications
Measures Up to 12 Li-Ion Cells in Series (60V Max)
Stackable Architecture Enables >1000V Systems
0.25% Maximum Total Measurement Error
13ms to Measure All Cells in a System
Cell Balancing:
- On-Chip Passive Cell Balancing Switches
- Provision for Off-Chip Passive Balancing

Two Thermistor Inputs Plus On-Board Temperature Sensor
1MHz Daisy-Chainable Serial Interface
High EMI Immunity
Delta Sigma Converter with Built-In Noise Filter
Open Wire Connection Fault Detection
Low Power Modes
44-Lead SSOP Package

The LTC6802-1 is a complete battery monitoring IC that includes a 12-bit ADC, a precision voltage reference, a high voltage input multiplexer and a serial interface. Each LTC6802-1 can measure up to 12 series connected battery cells with an input common mode voltage up to 60V. In addition, multiple LTC6802-1 devices can be placed in series to monitor the voltage of each cell in a long battery string. The unique level-shifting serial interface allows the serial ports of these devices to be daisy-chained without optocouplers or isolators.

When multiple LTC6802-1 devices are connected in series they can operate simultaneously, permitting all cell voltages in the stack to be measured within 13ms.

To minimize power, the LTC6802-1 offers a measure mode, which simply monitors each cell for overvoltage and undervoltage conditions. A standby mode is also provided.

Each cell input has an associated MOSFET switch for discharging overcharged cells.

For large battery stack applications requiring individually addressable serial communications, see the LTC6802-2.


	SPI Interface	Features
LTC6802-1	Daisy Chain	Multiple devices can be connected in serial fashion without digital isolation
LTC6802-2	Addressable	Parallel addressed SPI interface - each device in a chain communicates with a control processor in parallel via external digital isolators

Applications

Electric and Hybrid Electric Vehicles
High Power Portable Equipment
Backup Battery Systems
High Voltage Data Acquisition Systems

Part Models: 4
1ku List Price: Starting From $12.96

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
LTC6802IG-1#3ZZPBF	44-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6802IG-1#3ZZTRPBF	44-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6802IG-1#PBF	44-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6802IG-1#TRPBF	44-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 11, 2022 - 22_0242 Epoxy Change from Henkel 8290 to 8290A for SSOP PKG
		PCN22_0242_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC6802IG-1#3ZZPBF	PRODUCTION
LTC6802IG-1#3ZZTRPBF	PRODUCTION
LTC6802IG-1#PBF	PRODUCTION
LTC6802IG-1#TRPBF	PRODUCTION
Jul 31, 2020 - 20_0245 Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)
		PCN20_0245_Form Material_Report Delta Qualification Matrix Other Qualification Results Summary
LTC6802IG-1#3ZZPBF	PRODUCTION
LTC6802IG-1#3ZZTRPBF	PRODUCTION
LTC6802IG-1#PBF	PRODUCTION
LTC6802IG-1#TRPBF	PRODUCTION
Nov 18, 2019 - 19_0266 Laser Top Mark for SSOP36/44/48 Packages assembled in ADPG and UTAC
		PCN19_0266_Form Material_Report Detailed Parts List
LTC6802IG-1#3ZZPBF	PRODUCTION
LTC6802IG-1#3ZZTRPBF	PRODUCTION
LTC6802IG-1#PBF	PRODUCTION
LTC6802IG-1#TRPBF	PRODUCTION

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

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
Analog to Digital Converters (ADCs) 1
LTC2983	RECOMMENDED FOR NEW DESIGNS	Multi-Sensor High Accuracy Digital Temperature Measurement System
Battery Monitors & Fuel Gauges 1
LTC6803-1	NOT RECOMMENDED FOR NEW DESIGNS	12 Channel Multicell Battery Monitor, Upgrade to LTC6802-1