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.

特性 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