MAX11080GUU/V データシートの表示（PDF） - Maxim Integrated

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MAX11080GUU/V

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

Maxim Integrated 

19-4584; Rev 1; 6/10

EVAALVUAAILTAIOBNLEKIT

12-Channel, High-Voltage

Battery-Pack Fault Monitors

General Description

The MAX11080/MAX11081 are battery-pack fault-moni-

tor 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 over-

voltage levels are pin selectable from +3.3V to +4.8V

in 100mV increments, and have a guaranteed accura-

cy 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 guar-

anteed 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 thresh-

olds. 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 compara-

tor hysteresis prevents threshold chattering.

The MAX11080/MAX11081 are designed to be the per-

fect complement to the MAX11068 high-voltage mea-

surement IC for redundant fault-monitoring applications.

This device is 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.

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

Features

o Up to 12-Cell Li+ Battery Voltage Fault Detection

o Operation from 6.0V to 72V

o Pin-Selectable Overvoltage Threshold from +3.3V

to +4.8V in 100mV Increments

±25mV Overvoltage-Detection Accuracy

o Pin-Selectable Undervoltage Threshold from

+1.6V to +2.8V in 200mV Increments

±100mV Undervoltage-Detection Accuracy

o Overvoltage/Undervoltage-Threshold Detection

Hysteresis

MAX11080: 300mV

MAX11081: 37.5mV

o Programmable Delay Time of Alarm Detection

from 3.0ms to 3.32s with an External Capacitor

o Daisy-Chained Alarm and Shutdown Functions

with Heartbeat Status Signal

Up to 31 Devices Can Be Connected

o Ultra-Low-Power Dissipation

Operating-Mode Current Drain: 80µA

Shutdown-Mode Current: 2µA

o Wide Operating Temperature Range from -40°C to

+105°C (AEC-Q100, Type 2)

o 9.7mm x 4.4mm, 38-Pin TSSOP Package

o Lead(Pb)-Free and RoHS Compliant

Ordering Information

PART

TEMP RANGE PIN-PACKAGE

MAX11080GUU/V+ -40°C to +105°C 38 TSSOP

MAX11081GUU/V+ -40°C to +105°C 38 TSSOP

+Denotes a lead(Pb)-free/RoHS-compliant package.

/V denotes an automotive qualified part.

Pin Configuration appears at end of data sheet.

________________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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