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MAX11080, MAX11081

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

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

Overview

Technical Documents

Ordering Info

Status

Part Number	Status
MAX11080	Active: In Production. See Ordering Information for details.
MAX11081	Active: In Production. See Ordering Information for details.

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.

Data Sheet

Download	Rev 1	(PDF, 424kB)
E-Mail

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

Key Specifications:

Battery Protectors, Selectors and Monitors

Part Number

Functions

Battery Type

Parameters Measured

Battery Protection

V_SUPPLY
(V)

Industry Qualified

Package/Pins

Smallest Available Pckg.
(mm²)

Oper. Temp.
(°C)

Budgetary Price

min

max

max w/pins

See Notes

MAX11080

Status Monitor

1-12 Cell Li-Ion

Voltage

Over Voltage

Over/Under Voltage

Automotive - AECQ100

Automotive - General

TSSOP/38

63.7

-40 to +105

$2.65 @1k

See All Battery Protectors, Selectors and Monitors (29)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Functional Diagram

Product Guides

Automotive (PDF)

Reliability Reports

Reliability Report:	MAX11080.pdf MAX11081.pdf
Show FIT data for:

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX11080EVKIT		N/A	No Longer Available	MAX11068EVMINIQU+	KIT; Land Pattern: Not Available		See data sheet
MAX11080EVKIT+		N/A	No Longer Available	MAX11068EVMINIQU+	KIT; Land Pattern: Not Available		See data sheet
MAX11080GUU+			Active		TSSOP;38 pin;63.7 mm² Outline Drawing:21-0081 (PDF) Land Pattern: 90-0140 (PDF) Use pkgcode/variation: U38+1*	-40°C to +105°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX11080GUU+T			Active		TSSOP;38 pin;63.7 mm² Outline Drawing:21-0081 (PDF) Land Pattern: 90-0140 (PDF) Use pkgcode/variation: U38+1*	-40°C to +105°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX11080GUU/V+			Active		TSSOP;38 pin;63.7 mm² Outline Drawing:21-0081 (PDF) Land Pattern: 90-0140 (PDF) Use pkgcode/variation: U38+1*	-40°C to +105°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX11080GUU/V+T			Active		TSSOP;38 pin;63.7 mm² Outline Drawing:21-0081 (PDF) Land Pattern: 90-0140 (PDF) Use pkgcode/variation: U38+1*	-40°C to +105°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX11080IUU+			Active		TSSOP;38 pin;63.7 mm² Outline Drawing:21-0081 (PDF) Land Pattern: 90-0140 (PDF) Use pkgcode/variation: U38+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX11080IUU+T			Active		TSSOP;38 pin;63.7 mm² Outline Drawing:21-0081 (PDF) Land Pattern: 90-0140 (PDF) Use pkgcode/variation: U38+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX11081GUU+			Active		TSSOP;38 pin;63.7 mm² Outline Drawing:21-0081 (PDF) Land Pattern: 90-0140 (PDF) Use pkgcode/variation: U38+1*	-40°C to +105°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX11081GUU+T			Active		TSSOP;38 pin;63.7 mm² Outline Drawing:21-0081 (PDF) Land Pattern: 90-0140 (PDF) Use pkgcode/variation: U38+1*	-40°C to +105°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX11081GUU+TW		N/A	No Longer Available	MAX11081GUU+	TSSOP; Land Pattern: Not Available	-40°C to +105°C	See data sheet
MAX11081GUU+W		N/A	No Longer Available	MAX11081GUU+	TSSOP;38 pin;63.7 mm² Outline Drawing:21-0081 (PDF) Land Pattern: 90-0140 (PDF) Use pkgcode/variation: U38+1*	-40°C to +105°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX11081GUU/V+			Active		TSSOP;38 pin;63.7 mm² Outline Drawing:21-0081 (PDF) Land Pattern: 90-0140 (PDF) Use pkgcode/variation: U38+1*	-40°C to +105°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX11081GUU/V+T			Active		TSSOP;38 pin;63.7 mm² Outline Drawing:21-0081 (PDF) Land Pattern: 90-0140 (PDF) Use pkgcode/variation: U38+1*	-40°C to +105°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX11081IUU+			Active		TSSOP; Land Pattern: Not Available	-40°C to +85°C	See data sheet

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-4584 Rev 1; 2010-07-14
This page last modified: 2010-08-17