LTC6803-2

NOT RECOMMENDED FOR NEW DESIGNS

12 Channel Multicell Battery Monitor, Upgrade to LTC6802-2

Part Models: 8
1ku List Price: Starting From $11.78

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Overview

Measures Up to 12 Battery Cells in Series
Stackable Architecture
Supports Multiple Battery Chemistries and Supercapacitors
Individually Addressable Serial Interface
0.25% Maximum Total Measurement Error
Engineered for ISO26262 Compliant Systems
13ms to Measure All Cells in a System
Passive Cell Balancing:
- Integrated Cell Balancing MOSFETs
- Ability to Drive External Balancing MOSFETs

On-board Temperature Sensor and Thermistor Inputs
1MHz Serial Interface with Packet Error Checking
Safe with Random Connection of Cells
Built-In Self Tests
Delta-Sigma Converter With Built-In Noise Filter
Open-Wire Connection Fault Detection
12μA Standby Mode Supply Current
High EMI Immunity
44-Lead SSOP Package

The LTC6803 is a 2nd generation, complete battery monitoring IC that includes a 12-bit ADC, a precision voltage reference, a high voltage input multiplexer and a serial interface. Each LTC6803 can measure up to 12 series connected battery cells or supercapacitors. Many LTC6803 devices can be stacked to measure the voltage of each cell in a long battery string. Each LTC6803-2/LTC6803-4 has an individually addressable serial interface, allowing up to 16 LTC6803-2/LTC6803-4 devices to interface to one control processor and operate simultaneously. Each cell input has an associated MOSFET switch for discharging overcharged cells. The LTC6803-2 connects the bottom of the stack to V^– internally. It is pin compatible with the LTC6802-2, providing a drop-in upgrade. The LTC6803-4 separates the bottom of the stack from V^–, improving cell 1 measurement accuracy.

The LTC6803 provides a standby mode to reduce supply current to 12μA. Furthermore, the LTC6803 can be powered from an isolated supply, providing a technique to reduce battery stack current draw to zero.

The related LTC6803-1 and LTC6803-3 offer a serial interface that allows the serial ports of multiple LTC6803-1 or LTC6803-3 devices to be daisy chained without optocouplers or isolators.


	SPI Interface	Isolated V–	LTC6802 Pin Compatible
LTC6803-1	Daisy Chain	No	Yes
LTC6803-2	Addressable	No	Yes
LTC6803-3	Daisy Chain	Yes	No
LTC6803-4	Addressable	Yes	No

Applications

Electric and Hybrid Electric Vehicles
High Power Portable Equipment
Backup Battery Systems
Electric Bicycles, Motorcycles, Scooters

Part Models: 8
1ku List Price: Starting From $11.78

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
LTC6803HG-2#3ZZPBF	44-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6803HG-2#3ZZTRPBF	44-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6803HG-2#PBF	44-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6803HG-2#TRPBF	44-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6803IG-2#3ZZPBF	44-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6803IG-2#3ZZTRPBF	44-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6803IG-2#PBF	44-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC6803IG-2#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
LTC6803HG-2#3ZZPBF	LAST TIME BUY
LTC6803HG-2#3ZZTRPBF	LAST TIME BUY
LTC6803HG-2#PBF	LAST TIME BUY
LTC6803HG-2#TRPBF	LAST TIME BUY
LTC6803IG-2#3ZZPBF	LAST TIME BUY
LTC6803IG-2#3ZZTRPBF	LAST TIME BUY
LTC6803IG-2#PBF	LAST TIME BUY
LTC6803IG-2#TRPBF	LAST TIME BUY
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
LTC6803HG-2#3ZZPBF	LAST TIME BUY
LTC6803HG-2#3ZZTRPBF	LAST TIME BUY
LTC6803HG-2#PBF	LAST TIME BUY
LTC6803HG-2#TRPBF	LAST TIME BUY
LTC6803IG-2#3ZZPBF	LAST TIME BUY
LTC6803IG-2#3ZZTRPBF	LAST TIME BUY
LTC6803IG-2#PBF	LAST TIME BUY
LTC6803IG-2#TRPBF	LAST TIME BUY

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
Battery Monitors & Fuel Gauges 2
LT8584	RECOMMENDED FOR NEW DESIGNS	2.5A Monolithic Active Cell Balancer with Telemetry Interface
LTC3300-1	RECOMMENDED FOR NEW DESIGNS	High Efficiency Bidirectional Multicell Battery Balancer

Parts	Product Life Cycle	Description
LTC6804-1	NOT RECOMMENDED FOR NEW DESIGNS	12 Channel Multicell Battery Monitor with Daisy Chain Interface, Generation 3

Tools & Simulations

Linduino 3

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.

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Evaluation Kits

LTC6803-4 (Requires DC590B) | Demo Board

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Product Details

Evaluation circuit DC1835A is a Battery Monitoring System to demonstrate the functional operation of the LTC6803-4 integrated circuit. The design includes the ability to bus up to 10 devices with built-in board-toboard ribbon-cable interconnects and selectively apply resistive loading to any cell for purposes of “Passive Balancing.” Additionally, the board includes a DC-DC boost conversion section to power the IC from an isolated external 5V supply. The external 5V supply also powers a data isolator so that the user SPI data bus is floating with respect to the monitored cells.