General Description
The MAX11080/MAX11081 are battery-pack fault-monitor ICs capable of monitoring up to 12 lithium-ion (Li+) battery cells. This device is 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.

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
♦ Overvoltage/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
    High-Voltage, Multicell-Series-Stacked Battery Systems
    Electric Vehicles
    Hybrid Electric Vehicles
    Electric Bikes
    High-Power Battery Backup
    Solar Cell Battery Backup
    Super-Cap Battery Backup