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bq77904, bq77905

SLUSCM3G – JUNE 2016 – REVISED SEPTEMBER 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 ............................................... 4

6

Pin Configuration and Functions ......................... 5

7

Specifications......................................................... 6

7.1

Absolute Maximum Ratings ...................................... 6

7.2

ESD Ratings.............................................................. 6

7.3

Recommended Operating Conditions ....................... 6

7.4

Thermal Information .................................................. 7

7.5

Electrical Characteristics........................................... 7

7.6

Timing Requirements .............................................. 10

7.7

Typical Characteristics ............................................ 11

8

Detailed Description ............................................ 13

8.1

Overview ................................................................. 13

8.2

Functional Block Diagram ....................................... 14

8.3

Feature Description................................................. 15

8.4

Device Functional Modes........................................ 26

9

Application and Implementation ........................ 27

9.1

Application Information............................................ 27

9.2

Typical Application .................................................. 33

9.3

System Examples ................................................... 37

10

Power Supply Recommendations ..................... 37

11

Layout................................................................... 38

11.1

Layout Guidelines ................................................. 38

11.2

Layout Example .................................................... 38

12

Device and Documentation Support ................. 39

12.1

Documentation Support ....................................... 39

12.2

Receiving Notification of Documentation Updates 39

12.3

Community Resources.......................................... 39

12.4

Trademarks ........................................................... 39

12.5

Electrostatic Discharge Caution ............................ 39

12.6

Glossary ................................................................ 39

13

Mechanical, Packaging, and Orderable

Information ........................................................... 39

4 Revision History

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

Changes from Revision F (May 2017) to Revision G

Page

•

Added bq7790511 and bq7790512 to Device Comparison table........................................................................................... 4

Changes from Revision E (March 2017) to Revision F

Page

•

Changed bq7790400 setting: OV delay from 1s to 2s. UV from 2800mV to 2200mV, UV delay from 1s to 2s, UV

Hyst from 200 to 400mV, UV load recovery from N to Y. OCD2 from 80mV to 60mV, OCD2 delay from 700 to

350ms. SCD from 160mV to 100mV. ..................................................................................................................................... 4

•

Added bq7790508 and bq7790509 to Device Comparison table........................................................................................... 4

Changes from Revision D (March 2017) to Revision E

Page

•

Added bq7790505 to Device Comparison table..................................................................................................................... 4

•

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 .. 8

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................................................................................................................................................................. 7

Changes from Revision B (November 2016) to Revision C

Page

•

Added values in the Thermal Information table to align with JEDEC standards.................................................................... 7