1. ABLIC's Battery Protection ICs

Battery protection ICs protect batteries from hazards such as overcharging, overdischarging and overcurrent.
ABLIC has been developing and producing battery protection ICs since 1993, and has a track record of approximately 30 years in the industry.

ABLIC's battery protection IC design history

Lineup Diversity Facilitating “Appropriate Circuit Configuration”

If we include products that can be used with 1-cell batteries and automotive applications, our lineup offers about 2,100 products. Our vast product lineup provides strong support for developing safety-critical battery packs with secondary protection and other features to suit customer needs such as smaller, lighter, and thinner applications and the cascade connection of a large number of battery cells in series.

A 30-year Track Record Contributing to Safety and Security

In development and commercialization of products over a 30-year period since 1993, we have built and used the following knowhow,

  • Safety-critical product design
  • Advanced manufacturing technology
  • Reliable quality control

to provide our customers with safe and secure products.

Improving “Battery Pack Performance”

The high-withstand voltage CMOS process used in ABLIC's multi-cell battery protection ICs endows them with high accuracy and low power consumption. These ICs are also provided with the latest distinctive state-of-the-art functions optimized for a variety of applications enabling our customers to create battery packs with the performance they require.

ABLIC's battery protection IC. Improving battery pack performance

Lineup of “Automotive Grade” High-quality Protection ICs

ABLIC offers a host of products for use in automotive applications.
The development of electric vehicles (EV) and autonomous driving is increasing the demand for batteries as the power source of an automotive system. ABLIC provides a lineup of automotive protection ICs for use in battery management systems (BMS) that manage automotive batteries.

ABLIC's automotive IC lineup

Since automotive protection ICs must satisfy the high quality and high reliability required of automotive applications, we adopt the AEC-Q100 tests of the Automotive Electronics Council (AEC) to assess the reliability and quality of our products. They are also PPAP (Production Part Approval Process) capable.
In addition, we can provide protection ICs developed for automotive BMS in accordance with ISO26262 Functional Safety Standard, and a Safety Manual.
ABLIC's automotive protection ICs can be used for automotive applications that require higher safety.

 

2. Advantage of ABLIC's Battery Protection ICs for Multi-cell Pack

Able to function independent of microcontroller
  • ・No need to develop complex control software.
  • ・Continuously monitors battery status through stand-alone operation.
  • ・Solid hardware protection improves the safety of battery packs.
The addition of protection ICs helps to improve safety
  • ・In accordance with UL, IEC and other standards, it may be necessary to implement measures for single faults. Integrating protection IC into the system helps you comply with standards.
Technical capabilities to support the realization of optimal protection circuits
  • ・We provide technical support from selecting and combining optimal products to designing customized protection circuits. For details, please contact our sales representatives.

 

 

4. Function Description

  • Cascade Function
  • Cell Balancing Function
  • Wake-up Function
  • Temperature Protection Function
  • Power-saving Function
  • Output Voltage Limit Function
Cascade Function

Function description: cascade function

This function allows connection of multiple ICs to protect more than the maximum number of batteries possible for a single IC.
With the cascade function you can configure protection circuits for various numbers of batteries using the same series of ICs.

Related Information

Cell Balancing Function

Function description: Cell balancing function

Repeated charging and discharging may cause a difference (imbalance) in battery voltage due to slight variations in characteristics between lithium-ion batteries, resulting in shorter battery run time.
The cell balancing function uses a bypass route to discharge the battery that first reaches the cell-balance detection voltage in the charging cycle to compensate for any imbalance that may occur.

Related Information

Wake-up Function

The protection circuit board pins must be connected to the battery in the determined order when they are first connected as the secondary protection IC may otherwise output a signal that would blow the protection fuse.
The wake-up function prevents the output of a blown fuse signal until all batteries have been connected regardless of which order the battery and the protection circuit board has been connected in.

Function description: Wake-up function

Temperature Protection Function

An external NTC thermistor can be used to monitor the temperature and control charging and discharging.

Function description: Temperature protection function

Power-saving Function

This function sets the discharge current of the battery pack and the current consumption of the protection circuit to about zero.
This makes it possible to store and ship batteries at about zero current level.

Function description: Power-saving function

Output Voltage Limit Function

This function limits the maximum output voltage of the external FET control pin below a certain voltage.
Thus, FETs with a low gate withstand voltage can be used without additional components.

Function description: Output voltage limit function

 

5. Product Lineup of Battery Protection ICs for Multi-cell Pack

  • Battery Protection
  • Secondary Protection
  • Voltage Monitoring
  • Overcurrent Monitoring
  • Simple Battery Level Indicator
  • Automotive

Battery Protection
Application
example
Product name Number of cells Temp. protection Temp. protection Cascade
connection
Cascade
connection
Power-
saving
Power-
saving
Output voltage
limit
Output voltage
limit
Data-
sheet
Buy online Remarks
1 2 3 4 5 6
or more
Power Tools
Laptops
S-82A2A/B/C

chip1stop corestaFF ONLINE Digi-Key MOUSER  
S-82B2A/B

chip1stop corestaFF ONLINE Digi-Key MOUSER  
S-82C2A

chip1stop corestaFF ONLINE Digi-Key MOUSER  
S-82C2B/C

chip1stop corestaFF ONLINE Digi-Key MOUSER  
S-82B4A

chip1stop corestaFF ONLINE Digi-Key MOUSER 4 cells
S-82B5A

chip1stop corestaFF ONLINE Digi-Key MOUSER 5 cells
S-82C4A

chip1stop corestaFF ONLINE Digi-Key MOUSER 4 cells
S-82C5A

chip1stop corestaFF ONLINE Digi-Key MOUSER 5 cells
S-8245A

chip1stop corestaFF ONLINE Digi-Key MOUSER Integrated charge and discharge path
S-8245C

chip1stop corestaFF ONLINE Digi-Key MOUSER Separate charge and discharge paths
S-8245B

chip1stop corestaFF ONLINE Digi-Key MOUSER Integrated charge and discharge path
S-8245D

chip1stop corestaFF ONLINE Digi-Key MOUSER Separate charge and discharge paths

Secondary Protection
Application
example
Product name Number of cells Cascade
function
Cascade
function
Output voltage
limit
Output voltage
limit
Constant voltage
output
Wake-
up
Wake-
up
Cell
balancing
Cell
balancing
Data-
sheet
Buy online
1 2 3 4 5 6
or more
Power Tools
Laptops UPS
S-82K5B

chip1stop corestaFF ONLINE Digi-Key MOUSER  
S-82M5B

chip1stop corestaFF ONLINE Digi-Key MOUSER  
S-8223A/B/C/D

chip1stop corestaFF ONLINE Digi-Key MOUSER  
S-8224A/B

chip1stop corestaFF ONLINE Digi-Key MOUSER  
S-82H4

chip1stop corestaFF ONLINE Digi-Key MOUSER  
S-82K3/K4

chip1stop corestaFF ONLINE Digi-Key MOUSER  
S-8215C

chip1stop corestaFF ONLINE Digi-Key MOUSER  
S-8265C

chip1stop corestaFF ONLINE Digi-Key MOUSER  

Voltage Monitoring
Application
example
Product name Number of cells Cascade
connection
Cascade
connection
Cell
balancing
Cell
balancing
Power-
saving
Power-
saving
Temp. protection Temp. protection Data-
sheet
Buy online Remarks
1 2 3 4 5 6
or more
UPS
e-Bikes
e-Scooters
S-8209A

chip1stop corestaFF ONLINE Digi-Key MOUSER  
S-8209B

chip1stop corestaFF ONLINE Digi-Key MOUSER  
S-8255A

chip1stop corestaFF ONLINE Digi-Key MOUSER  
S-8255B

chip1stop corestaFF ONLINE Digi-Key MOUSER  

Overcurrent Monitoring
Application
example
Product name Number of cells Discharge overcurrent
detection
Load short-curcuiting
detection
Charge overcurrent
detection
No External
capacitor needed
Data-
sheet
Buy online Remarks
1 2 3 4 5 6
or more
S-8269B

chip1stop corestaFF ONLINE Digi-Key MOUSER  

Simple Battery Level Indicator
Application
example
Product name Number of cells LED Drive Enable / Disable control Data-
sheet
Buy online Remarks
1 2 3 4 5 6
or more
Power Tools
S-8229A VDET: 10.5V

chip1stop corestaFF ONLINE Digi-Key MOUSER  

Automotive
Application
example
Product name Number of cells Cascade
connection
Cascade
connection
Cell
balancing
Cell
balancing
Power-
saving
Power-
saving
Self
testing
Data-
sheet
Buy online Remarks
1 2 3 4 5 6 6
or more
BMS
S-19190

chip1stop corestaFF ONLINE Digi-Key MOUSER Overcharge peotection
S-19192

chip1stop corestaFF ONLINE Digi-Key MOUSER For voltage monitoring
S-8235A

chip1stop corestaFF ONLINE Digi-Key MOUSER Secondary protection

 

6. Packages

 

7. Try ABLIC's Battery Protection ICs for Multi-cell Pack

ABLIC's battery protection ICs for multi-cell pack can be purchased online. They are highly recommended.