4

5

6

7

8

11

12

PACK+

SCL

SDA

PACK–

PBI

VC2

VC1

SRN

SRP

VSS

TS1

SCL

SDA

PACK

3

2

1

9

10

CHG

DSG

100

100

MM3Z5V6C

100

100

10 k

0.1 µF

1 µF

0.1 µF

2.2 µF

100

5

5.1 k

5.1 k

10 M

10 M

10

100

100

1 to 3 m

Ω

Fuse

1 s

2 s

PWPD

13

0.1

MM3Z5V6C

0.1 µF

0.1 µF

10 k

2N7002K

Note: The input filter capacitors of 0.1 µF for the SRN and SRP pins must be located near the pins of

the device.

0.1 µF

0.1 µF

µF

0.1 µF

23

BQ28Z610-R1

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9 Applications and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

9.1 Application Information

The BQ28Z610-R1 gas gauge is a primary protection device that can be used with a 1- to 2-series Li-Ion/Li

Polymer battery pack. To implement and design a comprehensive set of parameters for a specific battery pack,

the user needs Battery Management Studio (BQSTUDIO), which is a graphical user-interface tool installed on a

PC during development. The firmware installed in the product has default values, which are summarized in the

BQ28Z610-R1 Technical Reference Manual (SLUUC81) for this product. Using the BQSTUDIO tool, these

default values can be changed to cater to specific application requirements during development once the system

parameters, such as fault trigger thresholds for protection, enable/disable of certain features for operation,

configuration of cells, chemistry that best matches the cell used, and more are known. This data can be referred

to as the "golden image."

9.2 Typical Applications

Figure 21 shows the BQ28Z610-R1 application schematic for the 2-series configuration. Figure 22 shows a

wireless (Bluetooth) speaker application block diagram.

Figure 21. BQ28Z610-R1 2-Series Cell Typical Implementation