LTC6802-1
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LTC6802-1

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

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warning : NOT RECOMMENDED FOR NEW DESIGNS tooltip
warning : NOT RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 4
1ku List Price Starting From $12.96
Features
  • 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
Additional Details
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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

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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Product Lifecycle

PCN

Oct 11, 2022

- 22_0242

Epoxy Change from Henkel 8290 to 8290A for SSOP PKG

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PRODUCTION

LTC6802IG-1#3ZZTRPBF

PRODUCTION

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PRODUCTION

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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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PRODUCTION

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PRODUCTION

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PRODUCTION

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PRODUCTION

Nov 18, 2019

- 19_0266

Laser Top Mark for SSOP36/44/48 Packages assembled in ADPG and UTAC

LTC6802IG-1#3ZZPBF

PRODUCTION

LTC6802IG-1#3ZZTRPBF

PRODUCTION

LTC6802IG-1#PBF

PRODUCTION

LTC6802IG-1#TRPBF

PRODUCTION

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Oct 11, 2022

- 22_0242

arrow down

Epoxy Change from Henkel 8290 to 8290A for SSOP PKG

LTC6802IG-1#3ZZPBF

PRODUCTION

LTC6802IG-1#3ZZTRPBF

PRODUCTION

LTC6802IG-1#PBF

PRODUCTION

LTC6802IG-1#TRPBF

PRODUCTION

Jul 31, 2020

- 20_0245

arrow down

Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

LTC6802IG-1#3ZZPBF

PRODUCTION

LTC6802IG-1#3ZZTRPBF

PRODUCTION

LTC6802IG-1#PBF

PRODUCTION

LTC6802IG-1#TRPBF

PRODUCTION

Nov 18, 2019

- 19_0266

arrow down

Laser Top Mark for SSOP36/44/48 Packages assembled in ADPG and UTAC

LTC6802IG-1#3ZZPBF

PRODUCTION

LTC6802IG-1#3ZZTRPBF

PRODUCTION

LTC6802IG-1#PBF

PRODUCTION

LTC6802IG-1#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 1

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DC1331D

LTC6802-1 (requires DC590) New Designs Should Use DC1651 or DC1653 | Demo Board

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