Power Management Battery Management Multicell Battery Stack Monitor
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LTC6803-1 and -3 - Multicell Battery Stack Monitor

Features

  • Measures Up to 12 Battery Cells in Series
  • Stackable Architecture
  • Supports Multiple Battery Chemistries and Supercapacitors
  • Serial Interface Daisy Chains to Adjacent Devices
  • 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
  • Onboard 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

Typical Application

LTC6803-1_-3 Typical Application
LTC6803-1_-3 Typical Application

Description

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. Using a unique level shifting serial interface, multiple LTC6803-1/ LTC6803-3 devices can be connected in series, without opto-couplers or isolators, allowing for monitoring of every cell in a long string of series-connected batteries. Each cell input has an associated MOSFET switch for discharging overcharged cells. The LTC6803-1 connects the bottom of the stack to V– internally. It is pin compatible with the LTC6802‑1, providing a drop-in upgrade. The LTC6803-3 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.

For applications requiring individually addressable serial communications, see the LTC6803-2/LTC6803-4.

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

SSOP-44

LTC6803-1_-3 Package Drawing
LTC6803-1_-3 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC6803HG-1#PBF SSOP 44 H $15.53 $11.14 View
LTC6803HG-1#TRPBF SSOP 44 H $15.59 $11.20 View
LTC6803HG-2#PBF SSOP 44 H $15.53 $11.14 View
LTC6803HG-2#TRPBF SSOP 44 H $15.59 $11.20 View
LTC6803HG-3#PBF SSOP 44 H $15.53 $11.14 View
LTC6803HG-3#TRPBF SSOP 44 H $11.20 View
LTC6803HG-4#PBF SSOP 44 H $15.53 $11.14 View
LTC6803HG-4#TRPBF SSOP 44 H $11.20 View
LTC6803IG-1#PBF SSOP 44 I $13.86 $9.95 View
LTC6803IG-1#TRPBF SSOP 44 I $10.01 View
LTC6803IG-2#PBF SSOP 44 I $13.86 $9.95 View
LTC6803IG-2#TRPBF SSOP 44 I $10.01 View
LTC6803IG-3#PBF SSOP 44 I $13.86 $9.95 View
LTC6803IG-3#TRPBF SSOP 44 I $10.01 View
LTC6803IG-4#PBF SSOP 44 I $13.86 $9.95 View
LTC6803IG-4#TRPBF SSOP 44 I $10.01 View
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC1651A LTC6803-1 (Requires DC590B) | Demo Board $150.00
DC1653A LTC6803-3 (Requires DC590B) | Demo Board $150.00
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Companion Boards

Part Number Description Price Documentation
DC590B USB Serial Controller for Linear Technology QuikEval Demo Boards $50.00
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Click here to view our complete list of demo boards

Applications

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

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