Power Management Battery Management Multicell Battery Stack Monitor
Space & Harsh Environment Extended Temperature Plastic (H & MP) Extended Temperature (H & MP) Power Management

LTC6801 - Independent Multicell Battery Stack Fault Monitor

Features

  • Monitors Up to 12 Li-Ion Cells in Series
    (60V Max)
  • Stackable Architecture Enables > 1000V Systems
  • 1% Maximum Overvoltage Detection Level Error
  • Adjustable Overvoltage and Undervoltage Detection
  • Self Test Features Guarantee Accuracy
  • Robust Fault Detection Using Differential Signals
  • Simple Pin-Strapped Confi guration Allows Battery Monitoring without a Microcontroller
  • 15.5ms to Monitor All Cells in a System
  • Programmable Response Time
  • Two Temperature Monitor Inputs
  • Low Power Idle Mode
  • 36-Lead SSOP Package

Typical Application

LTC6801 Typical Application
LTC6801 Typical Application

Description

The LTC6801 is a multicell battery monitoring IC incorporating a 12-bit ADC, a precision voltage reference, sampled comparator, and a high voltage input multiplexer. The LTC6801 can monitor as many as 12 series connected battery cells for overvoltage, undervoltage, and overtemperature conditions, indicating whether the cells are within specified parameters. The LTC6801 generates a clock output when no fault conditions exist. Differential clocking provides high noise immunity and ensures that battery stack fault conditions cannot be hidden by frozen bits or short circuit conditions.

Each LTC6801 can operate with a battery stack voltage up to 60V and multiple LTC6801 devices can be stacked to monitor each individual cell in a long battery string. When multiple devices are stacked, the status signal of each LTC6801 can be daisy-chained, without opto-couplers or isolators, providing a single status output for the entire battery string.

The LTC6801 is configurable by external pin strapping. Adjustable overvoltage and undervoltage thresholds support various Li-Ion chemistries. Selectable measurement times allow users to save power.

Packaging

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

SSOP-36

LTC6801 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC6801HG#PBF SSOP 36 H $6.99 $4.90 View
LTC6801HG#TRPBF SSOP 36 H $5.07 View
LTC6801IG#PBF SSOP 36 I $6.24 $4.48 View
LTC6801IG#TRPBF SSOP 36 I $4.54 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
DC1469B LTC6801 | Demo Board $75.00
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Click here to view our complete list of demo boards

Applications

  • Redundant Battery Monitor
  • Hybrid Electric Vehicles
  • Battery Backup Systems
  • Power Systems Using Multiple Battery Cells

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