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bq77904, bq77905

SLUSCM3E – JUNE 2016 – REVISED MARCH 2017

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Product Folder Links: bq77904 bq77905

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Copyright © 2016–2017, Texas Instruments Incorporated

Table of Contents

1

Features .................................................................. 1

2

Applications ........................................................... 1

3

Description ............................................................. 1

4

Revision History..................................................... 2

5

Device Comparison ............................................... 3

6

Pin Configuration and Functions ......................... 4

7

Specifications......................................................... 5

7.1

Absolute Maximum Ratings ...................................... 5

7.2

ESD Ratings.............................................................. 5

7.3

Recommended Operating Conditions ....................... 5

7.4

Thermal Information .................................................. 6

7.5

Electrical Characteristics........................................... 6

7.6

Timing Requirements ................................................ 9

7.7

Typical Characteristics ............................................ 10

8

Detailed Description ............................................ 12

8.1

Overview ................................................................. 12

8.2

Functional Block Diagram ....................................... 13

8.3

Feature Description................................................. 14

8.4

Device Functional Modes........................................ 25

9

Application and Implementation ........................ 26

9.1

Application Information............................................ 26

9.2

Typical Application .................................................. 32

9.3

System Examples ................................................... 36

10

Power Supply Recommendations ..................... 36

11

Layout................................................................... 37

11.1

Layout Guidelines ................................................. 37

11.2

Layout Example .................................................... 37

12

Device and Documentation Support ................. 38

12.1

Documentation Support ....................................... 38

12.2

Receiving Notification of Documentation Updates 38

12.3

Community Resources.......................................... 38

12.4

Trademarks ........................................................... 38

12.5

Electrostatic Discharge Caution ............................ 38

12.6

Glossary ................................................................ 38

13

Mechanical, Packaging, and Orderable

Information ........................................................... 38

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision D (March 2017) to Revision E

Page

•

Added bq7790505 to Device Comparison table..................................................................................................................... 3

•

Changed UTC(REC) at 5°C typ from 68.8 to 69.73 %VTB. Changed UTC(REC) at 10°C typ from 64.23 to 65.52 %VTB .. 7

Changes from Revision C (February 2017) to Revision D

Page

•

Changed VOTD, VOTD(REC), VOTC, VOTC(REC), VUTD, VUTD(REC), VUTC, VUTC(REC) MIN and MAX

specification values................................................................................................................................................................. 6

Changes from Revision B (November 2016) to Revision C

Page

•

Added values in the Thermal Information table to align with JEDEC standards.................................................................... 6

Changes from Revision A (June 2016) to Revision B

Page

•

Changed order of listed items in Features ............................................................................................................................. 1

•

Table 1 and Table 2, Changed OTC To: UTC in last column under Temperature. Changed bq7790400 and

bq7790503 to production status. Updated bq7790503 configuration .................................................................................... 3

•

Changed pin number from 16-pin to 20-pin .......................................................................................................................... 4

•

Corrected max value on the UTD at –20°C spec ................................................................................................................... 7

•

Changed comparator flow charts with new flow charts ........................................................................................................ 14

•

Corrected CTRC and CTRD delay time entries ................................................................................................................... 18

Changes from Original (June 2016) to Revision A

Page

•

Changed the device From: Product Preview To: Production ................................................................................................. 1