LTC6802-1
NOT RECOMMENDED FOR NEW DESIGNS12 Channel Multicell Battery Monitor with Daisy Chain Interface, Generation 1
- Part Models
- 4
- 1ku List Price
- Starting From $16.39
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
Documentation
Data Sheet 1
User Guide 1
Design Note 1
Technical Articles 5
Product Selector Card 1
Brochure 1
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 | ||
| LTC6802IG-1#3ZZTRPBF | 44-Lead SSOP | ||
| LTC6802IG-1#PBF | 44-Lead SSOP | ||
| LTC6802IG-1#TRPBF | 44-Lead SSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Oct 11, 2022 - 22_0242 Epoxy Change from Henkel 8290 to 8290A for SSOP PKG |
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| 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) |
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| 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 |
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| 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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Evaluation Kits
LTC6802-1 (requires DC590) New Designs Should Use DC1651 or DC1653 | Demo Board
Resources
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