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bq76920, bq76930, bq76940
www.ti.com
SLUSBK2G –OCTOBER 2013–REVISED MAY 2016
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Product Folder Links: bq76920 bq76930 bq76940
Revision HistoryCopyright © 2013–2016, Texas Instruments Incorporated
Table of Contents
1 Introduction ............................................... 1
1.1 Features .............................................. 1
1.2 Applications........................................... 1
1.3 Description............................................ 1
1.4 Simplified System Diagram........................... 2
2 Revision History ......................................... 3
3 Description (Continued)................................ 5
4 Device Comparison Table.............................. 5
5 Pin Configuration and Functions..................... 6
5.1 Versions .............................................. 6
5.2 bq76920 Pin Diagram ................................ 7
5.3 bq76930 Pin Diagram ................................ 8
5.4 bq76940 Pin Diagram ............................... 10
6 Specifications........................................... 12
6.1 Absolute Maximum Ratings ......................... 12
6.2 ESD Ratings ........................................ 12
6.3 Recommended Operating Conditions............... 12
6.4 Thermal Information................................. 14
6.5 Electrical Characteristics ............................ 14
6.6 Timing Requirements ............................... 19
6.7 Typical Characteristics .............................. 20
7 Detailed Description ................................... 21
7.1 Overview ............................................ 21
7.2 Functional Block Diagram........................... 21
7.3 Feature Description ................................. 22
7.4 Device Functional Modes ........................... 32
7.5 Register Maps ....................................... 34
8 Application and Implementation .................... 46
8.1 Application Information .............................. 46
8.2 Typical Applications ................................. 47
9 Power Supply Recommendations .................. 53
10 Layout .................................................... 54
10.1 Layout Guidelines ................................... 54
10.2 Layout Example ..................................... 54
11 Device and Documentation Support ............... 57
11.1 Documentation Support ............................. 57
11.2 Related Links........................................ 57
11.3 Community Resources .............................. 57
11.4 Trademarks.......................................... 57
11.5 Electrostatic Discharge Caution..................... 57
11.6 Glossary............................................. 57
12 Mechanical, Packaging, and Orderable
Information .............................................. 57
2 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision F (November 2015) to Revision G Page
• Changed Electrical Characteristics table to clarify the accuracy of the ADC in different temperature ranges.......... 15
Changes from Revision E (November 2014) to Revision F Page
• Changed bq7693002 From: Product Preview To Production in the Device Comparison Table............................ 5
• Added bq7693007 device to the Device Comparison Table .................................................................... 5
• Changed table note to group ground reference in bq76930 Pin Functions ................................................... 8
• Changed table note to group ground reference in bq76940 Pin Functions ................................................. 10
• Changed 10th cell to 11th cell in the Description of pin 29 ................................................................... 11
• Changed table formats for online data sheet ................................................................................... 12
• Changed Handing Ratings table to ESD Ratings ............................................................................... 12
• Changed note for R1 on Figure 7-3............................................................................................... 28
• Added more description to the Communications Subsystem section ........................................................ 31
• Changed "SHUTA" to "SHUT_A" and "SHUTB" to "SHUT_B" in the SHIP Mode section ................................ 33
• Changed CAUTION verbiage (editorial).......................................................................................... 33
• Changed the SHUT_A, SHUT_B bit descriptions in the SYS_CTRL1 (0x04) table ........................................ 37
Changes from Revision D (July 2014) to Revision E Page
• Added a note to the Absolute Maximum Ratings table ........................................................................ 12
• Changed the Handling Ratings.................................................................................................... 12
• Added the cross-reference to a new table note at V
ALERT_IH
in Electrical Characteristics ................................. 18
• Added a new table note ............................................................................................................ 18
• Added the Typical Characteristics section ....................................................................................... 20
• Changed the Alert section ......................................................................................................... 30