Table of Contents
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.
Lineup Diversity Facilitating “Appropriate Circuit Configuration”
If we include products that can be used with multi-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 1-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.
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.
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 1-cell Pack
Ultra-small packages and low current consumption:
- ・Reduces space saving in the circuit board area of wearable devices and portable devices.
- ・Suppresses the current consumption in applications using small-capacity lithium-ion batteries.
- ・Significantly reduces battery depletion of customers' products during the post-shipment inventory period by equipped our products with power-saving function.
A diverse product lineup with features such as high-accuracy overcurrent detection and temperature protection:
- ・Achieves a high level of safety with protection circuits, even for applications with high charge/discharge currents.
- ・Offers a wide range of products to cater to various applications, for situations requiring rapid charging and external control.
- ・Able to provide circuits with a high level of safety, including dual protection circuits and other specific requirements tailored to the customer's needs.
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.
3. Application-specific Circuit Examples
- [FET Ron Sense Type] Small Mounting Area, High-performance 1-cell Protection Circuit
- [Sense Resistor Type] High-accuracy Overcurrent Detection Protection Circuit Using a Current Detection Resistor
- Protection Circuit with High-performance Temperature Detection Using TH Pin
- Protection Circuit Capable of Reducing Battery Current Consumption with a Power-saving Function
- Protection Circuit that Safely Controls Fast Charging with an Alarm Function
- Protection Circuit with Battery Voltage Monitoring Pin for Accurate Battery Voltage Monitoring during Fast Charging
- Protection Circuit that Controls Charge and Discharge FETs with External Input Using CTL Pin
- Protection Circuit with Simple Temperature Detection Function Using CTL Pin
- Protection Circuit that Separates Charge and Discharge Current Paths and Suppresses Heat Generation
- Highly Safe Double Protection Circuit that Guards Against Single Circuit Failure
- Secondary Protection Circuit Using a Protection Fuse
- High-side Protection Circuit Required for Short-circuit Protection in Metal-cased Batteries
4. Function Description
Temperature Protection Function
An external NTC thermistor can be used to monitor the temperature and control charging and discharging.
5. Product Lineup of Battery Protection ICs for 1-cell Pack
Battery Protection (FET Ron)
Battery Protection (Sense Resistor)
High-side Protection
Secondary Protection
Automotive
| Application | Product name | Category (Overcurrent detection method) | Separate charge and discharge paths | Double Protection Config. | Buy online | Remarks | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Space-saving | S-8240A | Battery Protection (FET Ron) | – | – | – | – | – | – | – |     | |
| Space-saving | S-8240B | Battery Protection (FET Ron) | – | – | – | – | – | – | – | | High-accuracy overcurrent detection |
| High-performance temp. detection | S-82D1A | Battery Protection (Sense Resistor) | ✓ | – | – | – | ✓ | – | ✓ | | |
| Charge/discharge external control Simple temp. protection | S-82F1A | Battery Protection (Sense Resistor) | ✓ | – | – | – | – | – | ✓ | | |
| High-accuracy overcurrent detection through low resistance Double protection | S-82F1B | Battery Protection (Sense Resistor) | – | – | – | – | – | – | ✓ | | |
| Separate charge and discharge paths | S-82G1A | Battery Protection (Sense Resistor) | ✓ | – | – | – | – | ✓ | ✓ | | |
| Separate charge and discharge paths | S-82G1B | Battery Protection (Sense Resistor) | – | – | – | – | – | ✓ | ✓ | | |
| Charge/discharge external control Simple temp. protection | S-82K1A | Battery Protection (Sense Resistor) | ✓ | – | – | – | – | – | ✓ | | |
| High-accuracy overcurrent detection through low resistance Double protection | S-82K1B | Battery Protection (Sense Resistor) | – | – | – | – | – | – | ✓ | | |
| Alarm function | S-82L1A | Battery Protection (FET Ron) | ✓ | – | – | ✓ | – | – | – | | |
| Double protection | S-82M1A | Battery Protection (Sense Resistor) | ✓ | – | – | – | – | – | ✓ | | Low current consump. |
| Charge/discharge external control Simple temp. protection | S-82N1A | Battery Protection (FET Ron) | ✓ | – | – | – | – | – | – | | Low current consump. |
| Power-saving & Ultra-low current consump. | S-82N1B | Battery Protection (FET Ron) | – | ✓ | – | – | – | – | – | | Low current consump. |
| Charge/discharge external control Simple temp. protection | S-82P1A | Battery Protection (Sense Resistor) | ✓ | – | – | – | – | – | ✓ | | |
| High-accuracy overcurrent detection through low resistance Double protection | S-82P1B | Battery Protection (Sense Resistor) | – | – | – | – | – | – | ✓ | | |
| Battery voltage monitoring | S-82R1A | Battery Protection (Sense Resistor) | – | – | ✓ | – | ✓ | – | ✓ | | |
| Battery voltage monitoring | S-82S1A | Battery Protection (Sense Resistor) | – | – | ✓ | – | ✓ | – | ✓ | | |
| Alarm function | S-82T1A | Battery Protection (Sense Resistor) | – | – | – | ✓ | – | – | ✓ | | |
| Alarm function | S-82U1A | Battery Protection (Sense Resistor) | – | – | – | ✓ | – | – | ✓ | | |
| Alarm function | S-82V1A | Battery Protection (Sense Resistor) | – | – | – | ✓ | – | – | ✓ | | |
| High-accuracy overcurrent detection through low resistance Double protection | S-82Y1B | Battery Protection (Sense Resistor) | – | – | – | – | – | – | ✓ | | |
| High-accuracy overcurrent detection through low resistance Double protection | S-82Y1C | Battery Protection (Sense Resistor) | – | – | – | – | – | – | ✓ | | |
| High-side protection | S-821A | High-side Protection (Sense Resistor) | – | ✓ | – | – | ✓ | – | ✓ | | High-accuracy overcurrent detection |
| High-side protection | S-821B | High-side Protection (Sense Resistor) | – | ✓ | – | – | ✓ | – | ✓ | | High-accuracy overcurrent detection |
| Secondary protection | S-8206A | Secondary Protection | – | – | – | – | – | – | – | | |
| Secondary protection | S-8216A | Secondary Protection (Sense Resistor) | – | – | – | – | – | – | – | | Discharge overcurrent detection |
| Automotive batery protection | S-19161A | Battery Protection (FET Ron) | – | – | – | – | – | – | – | | |
| Automotive batery protection | S-19161B | Battery Protection (Sense Resistor) | – | – | – | – | – | – | – | |
6. Packages
7. Try ABLIC's battery protection ICs for 1-cell Pack
ABLIC's battery protection ICs for multi-cell pack can be purchased online. They are highly recommended.