CMOS IC Application NoteS-8255A Series Usage Guidelines

Rev.1.0_00© ABLIC Inc., 2018
The S-8255A Series is a monitoring IC for 3-serial to 5-serial cell lithium-ion rechargeable batteries, which includes
high-accuracy voltage detection circuits and delay circuits.
This application note is a guideline of the typical connection examples for applications using the S-8255A Series, andcontains the components list.
Refer to the datasheet for details and specs of this IC.
It is possible to configure the following application by using the S-8255A Series.
 Monitoring circuit for multi-serial cell of 6 cells or more

 Monitoring circuit for multi-serial cell using S-8255A Series

S-8255A

S-8255A

1

CMOS IC Application Note
Rev.1.0_00

S-8255A Series Usage Guidelines

Contents

1. Connection examples: Monitoring circuits for 6-serial to 10-serial cell with S-8255A Series (Cascade connection) ..... 3
1. 1 Monitoring circuit for 6-serial cell....................................................................................................................... 3
1. 2 Monitoring circuit for 7-serial cell....................................................................................................................... 4
1. 3 Monitoring circuit for 8-serial cell....................................................................................................................... 5
1. 4 Monitoring circuit for 9-serial cell....................................................................................................................... 6
1. 5 Monitoring circuit for 10-serial cell..................................................................................................................... 7
1. 6 External components list ................................................................................................................................... 8

2. Precautions when cascade-connecting S-8255A Series .................................................................... 10
3. Precautions ............................................................................................................................................ 11
4. Related source ....................................................................................................................................... 112

CMOS IC Application Note
Rev.1.0_00
1.

S-8255A Series Usage Guidelines

Connection examples: Monitoring circuits for 6-serial to 10-serial cell with S-8255A Series(Cascade connection)
1. 1Monitoring circuit for 6-serial cell

CTH1

RTH1

RVDD1
RVC11

CVDD1
CVC11

RVC21

CVC21

RVC31

CVC31RVC41
RVC51

RSEL111202193184175166157148139121011RSEL21

CCCT1

RCTLD
RCTLC
RTHC/DX1

CCDT1CPSI_C

RCTLD_C

RTH2

RVDD2RVC12RVC22

CVDD2CVC12CVC22RVC32

CVC32RVC42RVC52

RSEL12RSEL221202193184175166157148139121011

CCCT2CTH2

RCTLC_C

CCTLD_C

RPSI_CCCTLC_C

RPSI

RTHC/DX2

CCDT2Figure 1
Caution 1. The above connection example may be changed without notice.
2. It has not been confirmed whether the operation is normal or not in circuits other than the aboveconnection example. The connection example shown above will not guarantee successful
operation.

3CMOS IC Application Note
Rev.1.0_00

S-8255A Series Usage Guidelines
1. 2Monitoring circuit for 7-serial cell

CTH1RTH1RVDD11202193184175166157148139121011CVDD1RVC11CVC11RVC21CVC21RVC31CVC31RVC41
RVC51

RSEL11RSEL21

CCCT1RCTLD
RCTLC
RTHC/DX1CCDT1CPSI_C

RCTLD_C

RTH2RVDD212021931841751661571481391210RSEL2211CVDD2RVC12RVC22

CVC12CVC22RVC32CVC32RVC42CVC42RVC52

RSEL12CCCT2CTH2

CCTLD_C

RCTLC_C

RPSI_CCCTLC_C

RPSI

RTHC/DX2

CCDT2

Figure 2
Caution 1. The above connection example may be changed without notice.
2. It has not been confirmed whether the operation is normal or not in circuits other than the above
connection example. The connection example shown above will not guarantee successful
operation.

4

CMOS IC Application Note
Rev.1.0_00
1. 3

S-8255A Series Usage Guidelines

Monitoring circuit for 8-serial cell

CTH1

RTH1

RVDD1

120

2193184175166157148139121011

CVDD1

RVC11

CVC11RVC21

CVC21RVC31

CVC31RVC41

CVC41RVC51

RCTLD
RCTLC
RTHC/DX1

RSEL21

RSEL11

CCCT1CPSI_C

CCDT1

RCTLD_C

RTH2

RVDD21202193184175166157148139121011

CVDD2RVC12RVC22

CVC12CVC22RVC32

CVC32RVC42

CVC42RVC52

CTH2

CCTLD_C

RCTLC_C

RPSI_CCCTLC_C

RPSI

RTHC/DX2

RSEL22

RSEL12CCCT2

CCDT2Figure 3
Caution 1. The above connection example may be changed without notice.
2. It has not been confirmed whether the operation is normal or not in circuits other than the aboveconnection example. The connection example shown above will not guarantee successfuloperation.

5CMOS IC Application Note
Rev.1.0_00

S-8255A Series Usage Guidelines
1. 4Monitoring circuit for 9-serial cell

CTH1

RTH1

RVDD112021931841751661571481391210
RSEL21

11

CVDD1RVC11

CVC11RVC21

CVC21RVC31

CVC31RVC41

CVC41RVC51

RSEL11

CCCT1

RCTLD
RCTLC
RTHC/DX1CPSI_CCCDT1

RCTLD_C

RTH2

RVDD2
RVC121202193184175166157148139121011CVDD2
CVC12RVC22RVC32CVC22
CVC32RVC42

CVC42RVC52

CVC52

RSEL12

RSEL22

CCCT2

CTH2

CCTLD_C

RCTLC_C

RPSI_CCCTLC_C

RPSI

RTHC/DX2

CCDT2

Figure 4Caution 1. The above connection example may be changed without notice.
2. It has not been confirmed whether the operation is normal or not in circuits other than the above
connection example. The connection example shown above will not guarantee successful
operation.

6

CMOS IC Application Note
Rev.1.0_00
1. 5S-8255A Series Usage Guidelines

Monitoring circuit for 10-serial cell

CTH1

RTH1

RVDD1
RVC111202193184175166157148139121011

CVDD1CVC11RVC21CVC21RVC31CVC31RVC41CVC41RVC51

CVC51RSEL11RSEL21

CCCT1RCTLD
RCTLC
RTHC/DX1CPSI_C

CCDT1RCTLD_C

RTH2RVDD2RVC121202193184175166157148139121011CVDD2CVC12RVC22RVC32

CVC22CVC32RVC42

CVC42RVC52

CVC52RSEL12RSEL22

CCCT2CTH2

CCTLD_C

RCTLC_C

RPSI_CCCTLC_C

RPSI

RTHC/DX2

CCDT2Figure 5Caution 1. The above connection example may be changed without notice.
2. It has not been confirmed whether the operation is normal or not in circuits other than the above
connection example. The connection example shown above will not guarantee successfuloperation.

7CMOS IC Application Note
Rev.1.0_00

S-8255A Series Usage Guidelines
1. 6

External components list
Table 1 shows external components used in the connection examples: Figure 1 to Figure 5.
Table 1 (1 / 2)

5.1

M

MCR03

Maker
ABLIC Inc.
ABLIC Inc.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.
ROHM CO., LTD.

RCTLD_C

5.1

M

MCR03

ROHM CO., LTD.

RPSI_C

5.1
10101
1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
470

M
k
k
F
F
F
F
F
F
F
F
F
F
F
F
pF

MCR03
MCR03
MCR03
GRM21
GRM21
GRM188
GRM188
GRM188
GRM188
GRM188
GRM188
GRM188
GRM188
GRM188
GRM188
GRM188

ROHM CO., LTD.

Recommend

RTH1
RTH2
CVDD1
CVDD2
CVC11CVC21CVC31CVC41
CVC51
CVC12CVC22CVC32
CVC42
CVC52
CCTLC_C

ROHM CO., LTD.
ROHM CO., LTD.
Murata Manufacturing Co., Ltd.
Murata Manufacturing Co., Ltd.
Murata Manufacturing Co., Ltd.
Murata Manufacturing Co., Ltd.
Murata Manufacturing Co., Ltd.
Murata Manufacturing Co., Ltd.
Murata Manufacturing Co., Ltd.
Murata Manufacturing Co., Ltd.
Murata Manufacturing Co., Ltd.
Murata Manufacturing Co., Ltd.
Murata Manufacturing Co., Ltd.
Murata Manufacturing Co., Ltd.
Murata Manufacturing Co., Ltd.

Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend

CCTLD_C470

pF

GRM188Murata Manufacturing Co., Ltd.

Recommend

CPSI_C

470
0.1
0.1
0.1
0.1

pF
F
F
F
F

GRM188
GRM188
GRM188
GRM188
GRM188Murata Manufacturing Co., Ltd.

Recommend

Murata Manufacturing Co., Ltd.
Murata Manufacturing Co., Ltd.
Murata Manufacturing Co., Ltd.
Murata Manufacturing Co., Ltd.

Recommend
Recommend
Recommend
Recommend

SymbolIC1
IC2RVDD1RVDD2RVC11RVC21
RVC31RVC41
RVC51
RVC12RVC22RVC32
RVC42RVC52
RSEL11
RSEL12
RSEL21
RSEL22RCTLC
RCTLD
RPSI
RTHC/DX1
RTHC/DX2RCTLC_C

CCCT1CCCT2CCDT1CCDT28Typical100100
1111111111111122211Unit
kkkkkkkkkkkkkkkkkkk

Components Name
S-8255A
S-8255A
MCR03
MCR03
MCR03
MCR03
MCR03
MCR03
MCR03
MCR03
MCR03
MCR03
MCR03
MCR03
MCR03
MCR03
MCR03
MCR03
MCR03
MCR03
MCR03
MCR03
MCR03

Note
Necessary
Necessary
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend
Recommend

CMOS IC Application Note
Rev.1.0_00

S-8255A Series Usage Guidelines
Table 1 (2 / 2)

TypicalUnit

Components Name

CTH10.1

F

CTH20.1

F

NTC110NTC210Symbol

Maker

Note

GRM188Murata Manufacturing Co., Ltd.

Recommend

GRM188Murata Manufacturing Co., Ltd.

Recommendk

NCP18XH103F03RB

Murata Manufacturing Co., Ltd.

Recommendk

NCP18XH103F03RB

Murata Manufacturing Co., Ltd.

Recommend

Caution 1. The above constants are subject to change without prior notice.
2. These constants will not guarantee successful operation. Perform thorough evaluation using theactual application to set the constants.

9

CMOS IC Application Note
Rev.1.0_00

S-8255A Series Usage Guidelines
2.

Precautions when cascade-connecting S-8255A Series
Cascade-connecting the S-8255A Series, it allows for configuration of a battery monitoring circuit for multi-serial cell.
However, when each cell is not connected simultaneously, voltage exceeding the absolute maximum ratings for theS-8255A Series may be applied to the S-8255A Series from the external circuit. Note that this may damage theS-8255A Series.
It is thus recommended to add a Zener diode of 25 V to 28 V between the VDD pin and the VSS pin of the S-8255A
Series as a countermeasure.

RVDD
RVC
CVC
CVC

RVC
RVC

CVC

RVC

CVC

RVC

CVC

CVDD

RVDD
RVC
CVC
CVC

RVC
RVC

CVC

RVC

CVC

RVC

CVC

CVDD

RVDDRVCCVC
CVC
CVC
CVC
CVC

RVC
RVC
RVC
RVC
CVDD

Figure 6
Caution 1. The above connection example may be changed without notice.
2. It has not been confirmed whether the operation is normal or not in circuits other than the above
example of connection. The example of connection shown above will not guarantee successful
operation.

10

CMOS IC Application Note
Rev.1.0_00
3.

S-8255A Series Usage Guidelines

Precautions
 The usage described in this application note is typical examples using ICs of ABLIC Inc.
Perform thorough evaluation before use.
 When designing for mass production using an application circuit described herein, the product deviation andtemperature characteristics of the external components should be taken into consideration. ABLIC Inc. shall notbear any responsibility for patent infringements related to products using the circuits described herein.
 ABLIC Inc. claims no responsibility for any disputes arising out of or in connection with any infringement byproducts including this IC of patents owned by a third party.

4.

Related source
Refer to the following datasheet for details of the S-8255A Series.
S-8255A Series

DatasheetThe information described in this application note and the datasheet is subject to change without notice.
Contact our sales office for details.
Regarding the newest version of the datasheet, select product category and product name on our website, anddownload the PDF file.
www.ablic.com

ABLIC Inc. website

11

Disclaimers (Handling Precautions)1.

All the information described herein (product data, specifications, figures, tables, programs, algorithms andapplication circuit examples, etc.) is current as of publishing date of this document and is subject to change withoutnotice.

2.

The circuit examples and the usages described herein are for reference only, and do not guarantee the success ofany specific mass-production design.
ABLIC Inc. is not liable for any losses, damages, claims or demands caused by the reasons other than the products
described herein (hereinafter "the products") or infringement of third-party intellectual property right and any otherright due to the use of the information described herein.

3.

ABLIC Inc. is not liable for any losses, damages, claims or demands caused by the incorrect information describedherein.

4.

Be careful to use the products within their ranges described herein. Pay special attention for use to the absolute
maximum ratings, operation voltage range and electrical characteristics, etc.
ABLIC Inc. is not liable for any losses, damages, claims or demands caused by failures and / or accidents, etc. due tothe use of the products outside their specified ranges.

5.

Before using the products, confirm their applications, and the laws and regulations of the region or country where they
are used and verify suitability, safety and other factors for the intended use.

6.

When exporting the products, comply with the Foreign Exchange and Foreign Trade Act and all other export-relatedlaws, and follow the required procedures.

7.

The products are strictly prohibited from using, providing or exporting for the purposes of the development ofweapons of mass destruction or military use. ABLIC Inc. is not liable for any losses, damages, claims or demands
caused by any provision or export to the person or entity who intends to develop, manufacture, use or store nuclear,biological or chemical weapons or missiles, or use any other military purposes.

8.

The products are not designed to be used as part of any device or equipment that may affect the human body, humanlife, or assets (such as medical equipment, disaster prevention systems, security systems, combustion controlsystems, infrastructure control systems, vehicle equipment, traffic systems, in-vehicle equipment, aviation equipment,
aerospace equipment, and nuclear-related equipment), excluding when specified for in-vehicle use or other uses byABLIC, Inc. Do not apply the products to the above listed devices and equipments.
ABLIC Inc. is not liable for any losses, damages, claims or demands caused by unauthorized or unspecified use ofthe products.

9.

In general, semiconductor products may fail or malfunction with some probability. The user of the products should
therefore take responsibility to give thorough consideration to safety design including redundancy, fire spread
prevention measures, and malfunction prevention to prevent accidents causing injury or death, fires and social
damage, etc. that may ensue from the products' failure or malfunction.
The entire system in which the products are used must be sufficiently evaluated and judged whether the products areallowed to apply for the system on customer's own responsibility.

10. The products are not designed to be radiation-proof. The necessary radiation measures should be taken in theproduct design by the customer depending on the intended use.
11. The products do not affect human health under normal use. However, they contain chemical substances and heavy
metals and should therefore not be put in the mouth. The fracture surfaces of wafers and chips may be sharp. Be
careful when handling these with the bare hands to prevent injuries, etc.
12. When disposing of the products, comply with the laws and ordinances of the country or region where they are used.
13. The information described herein contains copyright information and know-how of ABLIC Inc. The information
described herein does not convey any license under any intellectual property rights or any other rights belonging to
ABLIC Inc. or a third party. Reproduction or copying of the information from this document or any part of thisdocument described herein for the purpose of disclosing it to a third-party is strictly prohibited without the express
permission of ABLIC Inc.
14. For more details on the information described herein or any other questions, please contact ABLIC Inc.'s sales
representative.
15. This Disclaimers have been delivered in a text using the Japanese language, which text, despite any translations into
the English language and the Chinese language, shall be controlling.
2.4-2019.07

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