MAX11081

12-Channel, High-Voltage Battery-Pack Fault Monitors

Ultra-Low-Power Overvoltage/Undervoltage 12-Cell Monitors


Please check latest availability status for a specific part variant.

Description

The MAX11080/MAX11081 are a battery-pack fault-monitor ICs capable of monitoring up to 12 lithium-ion (Li+) battery cells. These devices are designed to provide an overvoltage or undervoltage fault indication when any of the cells cross the user-selectable threshold for longer than the set program-delay interval. The overvoltage levels are pin selectable from +3.3V to +4.8V in 100mV increments, and have a guaranteed accuracy of ±25mV over the entire temperature range. The undervoltage level is also user selectable from +1.6V to +2.8V in 200mV increments. These levels are guaranteed to ±100mV over the entire temperature range. Undervoltage detection can be disabled as one of the user-configuration options.

The MAX11080/MAX11081 have a built-in level-shifter that allows up to 31 MAX11080/MAX11081 devices to be connected in a daisy-chain fashion to reduce the number of interface signals needed for large stacks of series batteries. Each cell is monitored differentially and compared to the overvoltage and undervoltage thresholds. When any of the cells exceed this threshold for longer than the set program delay interval, the MAX11080/MAX11081 inhibit the heartbeat signal from being passed down the daisy-chain. Built-in comparator hysteresis prevents threshold chattering.

The MAX11080/MAX11081 are designed to be the perfect complement to the MAX11068 high-voltage measurement IC for redundant fault-monitoring applications. These devices are offered in a 9.7mm x 4.4mm, 38-pin TSSOP package with 0.5mm pin spacing. The package is lead-free and RoHS compliant with an extended operating temperature range of -40°C to +105°C.
MAX11080: Functional Diagram MAX11080: Functional Diagram Enlarge+

Key Features

  • Up to 12-Cell Li+ Battery Voltage Fault Detection
  • Operation from 6.0V to 72V
  • Pin-Selectable Overvoltage Threshold from +3.3V to +4.8V in 100mV Increments
    • ±25mV Overvoltage Detection Accuracy
  • Pin-Selectable Undervoltage Threshold from +1.6V to +2.8V in 200mV Increments
    • ±100mV Undervoltage-Detection Accuracy
  • Over/Undervoltage-Threshold Detection Hysteresis
    • MAX11080: 300mV
    • MAX11081: 37.5mV
  • Programmable Delay Time of Alarm Detection from 3.0ms to 3.32s with an External Capacitor
  • Daisy-Chained Alarm and Shutdown Functions with Heartbeat Status Signal
    • Up to 31 Devices Can Be Connected
  • Ultra-Low-Power Dissipation
    • Operating-Mode Current Drain: 80µA
    • Shutdown-Mode Current: 2µA
  • Wide Operating Temperature Range from -40°C to +105°C (AEC-Q100, Type 2)
  • 9.7mm x 4.4mm, 38-Pin TSSOP Package
  • Lead(Pb) Free and RoHS Compliant

Applications/Uses

  • Electric Bikes
  • Electric Vehicles
  • High-Power Battery Backup
  • High-Voltage Multicell-Series-Stacked Battery Systems
  • Hybrid Electric Vehicles
  • Solar Cell Battery Backup
  • Super-Cap Battery Backup

Quality and Environmental Data

Product Reliability Reports: MAX11081.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX11081GUU/V+
  • MAX11081GUU/V+T
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
    Status:
    Package:
    Temperature:

    Related Resources


    MAX17301
    1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

    • Battery Health + Programmable Safety/Protection
    • Nonvolatile Memory for Stand-Alone Operation
    • Low Quiescent Current

    MAX17302
    1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

    • Battery Health + Programmable Safety/Protection
    • Nonvolatile Memory for Stand-Alone Operation
    • Low Quiescent Current

    MAX17313
    1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

    • Battery Health + Programmable Safety/Protection
    • Nonvolatile Memory for Stand-Alone Operation
    • Low Quiescent Current

    MAX17311
    1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

    • Battery Health + Programmable Safety/Protection
    • Nonvolatile Memory for Stand-Alone Operation
    • Low Quiescent Current

    MAX17312
    1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

    • Battery Health + Programmable Safety/Protection
    • Nonvolatile Memory for Stand-Alone Operation
    • Low Quiescent Current

    MAX17303
    1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication

    • Battery Health + Programmable Safety/Protection
    • Nonvolatile Memory for Stand-Alone Operation
    • Low Quiescent Current

    MAX17823H
    12-Channel, High-Voltage Data-Acquisition Systems

    • AEC-Q100 Grade 2 Temperature Range
    • Operating Voltage from 9V to 65V
    • Ultra-Low Power Operation


    Belle Isle 2020
    05/29/2020 - 05/31/2020, Detroit, MI
    2020 Detroit Grand Prix - Chevrolet Detroit Grand Prix presented by Lear Fast Facts The Chevrolet Detroit Grand Prix presented by Lear was hosted on Belle Isle, May 29 - 30 2020. The event featured the cars of the NTT IndyCar Series, the IMSA WeatherTech SportsCar Championship and the Trans Am Series presented by Pirelli. The weekend is collectively referred to as the Chevrolet Detroit Grand Prix presented by Lear and it once again featured the Chevrolet Dual in Detroit IndyCar doubleheader.

    RSVP