ATA6871-TLQW

ATA6871-TLQW Datasheet

ATA6871

Part	Datasheet
ATA6871-TLQW	ATA6871-TLQW (pdf)

Related Parts	Information
ATA6871-TLPW	ATA6871-TLPW

PDF Datasheet Preview
• Overvoltage Monitoring • Undervoltage Monitoring • Cell Temperature Monitoring • Self-diagnosis including Comparator Functions Communication Lines Short and Open Measuring Lines • Hot Plug-in Capable • Less than 10 µA Stand-by Current • Low Cell Imbalance Current < 10 µA • Circuit Customization, e.g. for Over/Undervoltage Thresholds Possible for Adequate Volumes • Cost-efficient Solution Due to Cost Optimized 30V CMOS Technology • Daisy-chainable Each IC Monitors 6 Battery Cells 16 ICs 96 Cells per String No Limit on Number of Strings Reliable Communication between Stacked ICs Due to Level Shifters with Current Sources • Package SSO28 Li-ion Battery Management Monitoring Emergency and Backup Circuit ATA6871 • Backup Battery-Cell Monitoring System for Li-ion Batteries • Emergency Indicator in Li-ion Batteries • Monitoring System in Li-ion Batteries • Highest Safety Level for Li-ion Battery Systems • Circuit Customization, e.g. Over and Undervoltage Thresholds, Possible for Large Production Volumes The ATA6871 is a battery cell monitoring circuit designed to act as an emergency, safety, or backup circuit in Li-ion battery systems for electrical and hybrid electrical vehicles EV/HEV . It monitors overvoltage, undervoltage, and the cell temperature in Li-ion batteries without the need of a microcontroller. The circuit has an advanced self-test functionality, which checks the proper functionality of the monitoring comparators as well as the communication lines. It can be used as a monitoring circuit as well as an emergency indicator or as a backup system in Li-ion battery management systems. The ATA6871 can monitor four, five, or six battery cells. Up to 16 IC’s can be cascaded. If one or more battery cells exceed the over or undervoltage thresholds for longer than 2 seconds, or if the temperature input exceeds the temperature limit for more than 2 seconds, a digital output signal is set to high. Block Diagram Figure Top-level Block Diagram MBAT7 OV Cell 6: Over-voltage Under-voltage MBAT6 Detection UV MBAT2 MBAT1 VDD OV Cell 1: Over-voltage Under-voltage Detection UV TEMP_IN NTC Overtemperature comparator 6 Test 6 Input OR Debouncing > 2 sec 6 Input OR Debouncing > 2 sec Debouncing > 2 sec To ATA6871 above VDDHV Standby Control RC-OSC Self test PD_N PD_N_OUT STATUS_IN STATUS 3.3V Internal Voltage Regulator Internal Biasing VDD BIASRES Chip Configuration Ordering Information Extended Type Number ATA6871-TLPW ATA6871-TLQW Package SSO28 MOQ 1,000 pieces 4,000 pieces Package Information The IC is packaged in a SSO28 package green lead-free/RoHS package. Drawing-No.: Issue 1; Package SSO28 Dimensions in mm technical drawings according to DIN specifications History 9123B-AUTO-07/09 • Table 5 “Absolute Maximum Ratings” on page 7 changed • Table 7-1 “Electrical Characteristics” on page 10 changed • Heading “ON-Mode/Selfdiagnosis” on page 10 changed • Table 7-4 “Electrical Characteristics” on page 12 changed • Table 7-8 “Electrical Characteristics” on page 16 changed • Table 7-10 “Digital Output Characteristics OROUT, STATUS ” on page 19 changed • Table 7-11 “Digital Input Characteristics OROUT_IN, STATUS_IN ” on page 19 changed • Table 7-12 “Digital Input Characteristics PINs CHIPONE, CHIPLAST, CONF0, CONF1, ENUV” on page 19 changed 22 ATA6871 [Preliminary] Headquarters Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel 1 408 441-0311 Fax 1 408 487-2600 International Atmel Asia Unit 1-5 & 16, 19/F BEA Tower, Millennium City 5 418 Kwun Tong Road Kwun Tong, Kowloon Hong Kong Tel 852 2245-6100 Fax 852 2722-1369 Atmel Europe Le Krebs 8, Rue Jean-Pierre Timbaud BP 309 78054 Saint-Quentin-en-Yvelines Cedex France Tel 33 1-30-60-70-00 Fax 33 1-30-60-71-11 Atmel Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel 81 3-3523-3551 Fax 81 3-3523-7581 Product Contact Web Site Literature Requests Technical Support Sales Contact Disclaimer The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’S TERMS AND CONDITIONS OF SALE LOCATED ON ATMEL’S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Unless specifically provided otherwise, Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. 2009 Atmel Corporation. All rights reserved. Atmel logo and combinations thereof, and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others.

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• Overvoltage Monitoring
• Undervoltage Monitoring
• Cell Temperature Monitoring
• Self-diagnosis including

Comparator Functions Communication Lines Short and Open Measuring Lines
• Hot Plug-in Capable
• Less than 10 µA Stand-by Current
• Low Cell Imbalance Current < 10 µA
• Circuit Customization, e.g. for Over/Undervoltage Thresholds Possible for Adequate Volumes
• Cost-efficient Solution Due to Cost Optimized 30V CMOS Technology
• Daisy-chainable Each IC Monitors 6 Battery Cells 16 ICs 96 Cells per String No Limit on Number of Strings Reliable Communication between Stacked ICs Due to Level Shifters with Current

Sources
• Package SSO28

Li-ion Battery Management Monitoring Emergency and Backup Circuit

ATA6871
• Backup Battery-Cell Monitoring System for Li-ion Batteries
• Emergency Indicator in Li-ion Batteries
• Monitoring System in Li-ion Batteries
• Highest Safety Level for Li-ion Battery Systems
• Circuit Customization, e.g. Over and Undervoltage Thresholds, Possible for Large

Production Volumes

The ATA6871 is a battery cell monitoring circuit designed to act as an emergency, safety, or backup circuit in Li-ion battery systems for electrical and hybrid electrical vehicles EV/HEV . It monitors overvoltage, undervoltage, and the cell temperature in Li-ion batteries without the need of a microcontroller. The circuit has an advanced self-test functionality, which checks the proper functionality of the monitoring comparators as well as the communication lines. It can be used as a monitoring circuit as well as an emergency indicator or as a backup system in Li-ion battery management systems. The ATA6871 can monitor four, five, or six battery cells. Up to 16 IC’s can be cascaded. If one or more battery cells exceed the over or undervoltage thresholds for longer than 2 seconds, or if the temperature input exceeds the temperature limit for more than 2 seconds, a digital output signal is set to high.

Block Diagram

Figure Top-level Block Diagram

MBAT7

OV Cell 6:

Over-voltage

Under-voltage

MBAT6

Detection UV

MBAT2

MBAT1 VDD

OV Cell 1:

Over-voltage

Under-voltage

Detection UV

TEMP_IN NTC

Overtemperature comparator
6 Test
6 Input OR

Debouncing > 2 sec
6 Input OR

Debouncing > 2 sec

Debouncing > 2 sec

To ATA6871 above

VDDHV

Standby Control RC-OSC

Self test

PD_N PD_N_OUT STATUS_IN

STATUS
3.3V Internal Voltage Regulator

Internal Biasing

VDD BIASRES

Chip Configuration
Ordering Information

Extended Type Number ATA6871-TLPW ATA6871-TLQW

Package SSO28

MOQ 1,000 pieces 4,000 pieces

Package Information

The IC is packaged in a SSO28 package green lead-free/RoHS package.

Drawing-No.:

Issue 1;

Package SSO28 Dimensions in mm
technical drawings according to DIN specifications

History
9123B-AUTO-07/09
• Table 5 “Absolute Maximum Ratings” on page 7 changed
• Table 7-1 “Electrical Characteristics” on page 10 changed
• Heading “ON-Mode/Selfdiagnosis” on page 10 changed
• Table 7-4 “Electrical Characteristics” on page 12 changed
• Table 7-8 “Electrical Characteristics” on page 16 changed
• Table 7-10 “Digital Output Characteristics OROUT, STATUS ”
on page 19 changed
• Table 7-11 “Digital Input Characteristics OROUT_IN, STATUS_IN ”
on page 19 changed
• Table 7-12 “Digital Input Characteristics PINs CHIPONE, CHIPLAST,

CONF0, CONF1, ENUV” on page 19 changed
22 ATA6871 [Preliminary]

Headquarters

Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel 1 408 441-0311 Fax 1 408 487-2600

International

Atmel Asia Unit 1-5 & 16, 19/F BEA Tower, Millennium City 5 418 Kwun Tong Road Kwun Tong, Kowloon Hong Kong Tel 852 2245-6100 Fax 852 2722-1369

Atmel Europe Le Krebs 8, Rue Jean-Pierre Timbaud BP 309 78054 Saint-Quentin-en-Yvelines Cedex France Tel 33 1-30-60-70-00 Fax 33 1-30-60-71-11

Atmel Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel 81 3-3523-3551 Fax 81 3-3523-7581

Product Contact

Web Site

Literature Requests

Technical Support

Sales Contact

Disclaimer The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’S TERMS AND CONDITIONS OF SALE LOCATED ON ATMEL’S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Unless specifically provided otherwise, Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life.
2009 Atmel Corporation. All rights reserved. Atmel logo and combinations thereof, and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others.

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived ATA6871-TLQW Datasheet file may be downloaded here without warranties.

Datasheet ID: ATA6871-TLQW 519233