BQ2947_16 Datasheet, PDF (2/24 Pages) Texas Instruments – Overvoltage Protection for 2-Series to 4-Series Cell Li-Ion Batteries

bq2947
SLUSB15E – SEPTEMBER 2012 – REVISED FEBRUARY 2016
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Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Options....................................................... 3
6 Pin Configuration and Functions ......................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 ESD Ratings.............................................................. 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 4
7.5 Electrical Characteristics........................................... 5
7.6 Typical Characteristics .............................................. 7
8 Detailed Description .............................................. 8
8.1 Overview ................................................................... 8
8.2 Functional Block Diagram ......................................... 8
8.3 Feature Description................................................... 8
8.4 Device Functional Modes........................................ 10
9 Application and Implementation ........................ 12
9.1 Application Information............................................ 12
9.2 Typical Applications ................................................ 12
10 Power Supply Recommendations ..................... 15
11 Layout................................................................... 15
11.1 Layout Guidelines ................................................. 15
11.2 Layout Example .................................................... 15
12 Device and Documentation Support ................. 16
12.1 Documentation Support ........................................ 16
12.2 Community Resources.......................................... 16
12.3 Trademarks ........................................................... 16
12.4 Electrostatic Discharge Caution ............................ 16
12.5 Glossary ................................................................ 16
13 Mechanical, Packaging, and Orderable
Information ........................................................... 16
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision D (November 2015) to Revision E
Page
• Changed bq297406 device status From: Product Preview To: Active in the Device Options Table .................................... 3
Changes from Revision C (November 2015) to Revision D
Page
• Changed the device number to bq2947 ................................................................................................................................ 1
• Deleted the Related Links table from the Device and Documentation Support section....................................................... 16
Changes from Revision B (August 2014) to Revision C
Page
• Added bq294708 and bq294709 to the datasheet ................................................................................................................. 1
• Added preview footnote to Device Options Table ................................................................................................................. 3
• Added bq294708 and bq294709 to Device Options Table .................................................................................................... 3
Changes from Revision A (June 2013) to Revision B
Page
• Added ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section .................................................................................................. 1
Changes from Original (September 2012) to Revision A
Page
• Added the bq294707 device to Production Data.................................................................................................................... 1
2
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