12V Battery Management Systems (BMS)

 

12V Battery Management System_lead free

Global warming, air pollution and other environmental issues have accelerated the trend away from the internal combustion engine (ICE*) towards EV, PHEV, HEV and other environmentally conscious vehicles.
The EU ELV* Directive is a vigorous effort to reduce the environmental impact through a reduction of substances of concern including lead. However, the 12V lead-acid battery is exempt from the Directive and will continue to be used as there is no alternative that can replace its use in ICE, EV, PHEV or HEV vehicles.
Since 12V lead-acid batteries are expected to be prohibited in the near future, battery manufacturers are working on developing a 12V lithium-ion battery replacement. Lithium-ion batteries differ from lead-acid batteries in that they require a BMS* for high-accuracy monitoring of battery voltage, charge-discharge current, temperature, etc. To prevent battery depletion, a reduction in standby current is indispensable.

ABLIC provides a host of products that are ideal as ICs in a BMS. ABLIC’s lineup includes lithium-ion battery protection ICs suitable for voltage monitoring of any battery cell, battery monitoring ICs suitable for total voltage monitoring of battery cells, operational amplifiers suitable for monitoring charge-discharge current, intermittently operating convenience timer ICs suitable for reducing standby current or low current consumption power supply ICs. ABLIC has a host of products enabling selection of ICs ideal for 12V BMS.

  • *ICE: Internal Combustion Engine
  • *ELV: End of Life Vehicle
  • *BMS: Battery Management System

12V battery management system (BMS) block diagram
 

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12V battery management system (BMS) block diagram

ABLIC’s ICs ideal for 12V Battery Management System (BMS)

Product Recommended product Applications and Features
Lithium-ion Battery Protection IC S-19192 Battery monitoring IC for 3-serial to 6-serial cell pack. With a standalone monitoring function and self-diagnosis (self-test) function.
Battery Monitoring IC
(Voltage detector)
S-191E Provides overvoltage and undervoltage monitoring. Built-in SENSE Pin reverse connection protection circuit. Current consumption of 0.9µA.
Operational amplifier S-19630A High-accuracy current detection. 36V operation, Rail-to-Rail input/output, low offset voltage of 50μV.
Operational amplifier S-19611A High-accuracy current detection. 5.5V operation, Rail-to-Rail input/output, low offset voltage of 100μV.
Convenience Timer S-35720 A Ultra-low current consumption of 0.2uA typ. Reduce standby current by operating the system intermittently.
LDO Regulator
(Linear Regulator)
S-19310 Supplies and monitors power to the timer IC controlling intermittent operation. World’s lowest current consumption of 2.2µA. With reset function.
Watchdog Timer S-19518/9 With reset and LDO regulator functions. Current consumption of 3.2µA.
EEPROM S-25AxxxB SPI Serial EEPROM. Comes with a variety of functions for preventing incorrect operation. Ensures 300,000 rewrites in operation at up to 125℃.

Features

Lithium-ion Battery Protection IC S-19192 series Ultra-low current consumption

Automotive, 105°C Operation, Battery Monitoring IC for 3-Serial to 6-Serial Cell Pack S-19192 Series

A Simple Configuration Capable of Standalone Monitoring Provided with a Self-diagnosis Function for Failure Detection

This is a 3 to 6-serial cell battery monitoring IC with a standalone monitoring function and self-diagnosis (self-test) function. Since the current consumption during operation is 18μA (max.), it can also be used in systems with strict standby current restrictions.

>>Learning more about the S-19192

Series name


S-19192

Datasheet

Overcharge detection voltage accuracy: 2.5 to 4.5V (±20mV)
Overdischarge detection voltage accuracy: 1.5 to 3.0V (±80mV)

Battery Monitoring IC S-191E series Ultra-low current consumptionUltra-compact package

Automotive, 125°C Operation, 36 V, Window Voltage Detector with SENSE Pin Reverse Connection Protection S-191ExxxxA Series

High-reliability Voltage Monitoring for Functional Safety

A window battery monitoring IC that detects 36V input, undervoltage and overvoltage with high accuracy. The wide rated voltage from -30 to 45V of the monitoring connection (SENSE) pin enables input of high voltage as well as negative voltage.

>>Learning more about the S-191E

Series name


S-191E

Datasheet

Undervoltage detection: 4.0V to 10.0V
Overvoltage detection: 16.0V to 18.0V

High-accuracy Operational Amplifier S-19630A Low offset voltage36V operation

Automotive, 125°C Operation, Low Input Offset Voltage CMOS Operational Amplifier S-19630A

Contributing to High-Accuracy Current Sensors

A wide operating voltage range allows use of this IC in systems from 5V to high-voltage systems directly connected to battery. Low offset voltage enables high-accuracy current detection. Input Rail-to-Rail enables low-side and high-side current detection.

>>Learning more about the S-19630A

Series name


S-19630A

Datasheet

Operating voltage range: 4.0 V to 36 V
Low offset voltage: 50μV max.
Input Rail-to-Rail

High-accuracy Operational Amplifier S-19611A Low offset voltageLow voltage operation

Automotive, 105°C Operation, Low Input Offset Voltage CMOS Operational Amplifier S-19611A

Contributing to High-Accuracy Current Sensors

Low offset voltage enables high-accuracy current detection. Input Rail-to-Rail enables low-side and high-side current detection.

>>Learning more about the S-19611A

Series name


S-19611A

Datasheet

Operating voltage range: 2.65 V to 5.5 V
Low offset voltage: 100μV max.
Input Rail-to-Rail

Convenience Timer S-35720 A series Ultra-low current consumptionAlarm interrupt function

Convenience Timer, Automotive, 125°C Operation, Timer with Interrupt Time Setting Pin S-35720 A Series

Intermittent Operation Greatly Reduces System Standby Current

This is a convenience timer with a hardware timer setting that allows the user to select alarm interrupt times using time setting pins. Thanks to its ultra-low current consumption of 0.2uA, this timer IC can replace the internal timer of a microcontroller (MCU) , which helps to greatly reduce standby current by operating the system intermittently.

>>Learning more about the S-35720 A

Series name


S-35720 A

Datasheet

Operating voltage range: 1.8 V to 5.5 V

LDO Regulator S-19310 series Ultra-low current consumption

Automotive, 125°C Operation, 36 V Input, 40 mA Voltage Regulator with Reset Function S-19310 Series

World’s Lowest Current Consumption Reduces Standby Current

This is an LDO regulator with a 36V input, 40mA output, an ultra-low current consumption of 2.2μA (typ.) and comes with a reset function for monitoring the output voltage of the internal LDO regulator. It can be used as a timer IC power supply to create an intermittently operating system with ultra-low current consumption.

>>Learning more about the S-19310

Series name


S-19310

Datasheet

Output voltage: 2.9V~5.3V

Watchdog Timer S-19518/9 series Ultra-low current consumption

Automotive, 125°C Operation, 36 V Input, 500 mA, Built-in Window Watchdog Timer, Voltage Regulator with Reset Function S-19519 Series

Single chip IC for Supplying MCU Power, Monitoring Voltage and Operation

This is a window watchdog timer IC with a 36V input, 500mA output and reset and LDO regulator functions. Current consumption during operation is a mere 3.2uA and when the Enable (EN) pin turns off the power supply to the MCU, standby current is reduced to virtually zero.

>>Learning more about the S-19518
>>Learning more about the S-19519

Series name


S-19518

Datasheet

Output current: 250mA

Series name


S-19519

Datasheet

Output current: 500mA

EEPROM S-25AxxxB series Page writeSequential read

125°C Operation SPI Serial EEPROM for Automotive S-25AxxxB Series

An IC Satisfying the Industry’s Highest Standards, Fully Operational up to +125℃, Data Can be Rewritten up to 300,000 Times and Retained for up to 50 Years

This is an 8K to 256Kbit SPI bus serial EEPROM. We provide a broad lineup of packages from 8-pin SOP, 8-pin TSSOP and 8-pin TMSOP.

>>Learning more about the S-25AxxxB
≫8K, 16K, 32K-bit ≫64K-bit ≫128K-bit ≫256K-bit

Series name


S-25A080B
S-25A160B
S-25A320B

Datasheet

Memory capacity: 8K, 16K, 32K-bit

Series name


S-25A640B

Datasheet

Memory capacity: 64K-bit

Series name


S-25A128B

Datasheet

Memory capacity: 128K-bit

Series name/p>


S-25A256B

Datasheet

Memory capacity: 256K-bit

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