BQ26231PWG4

Series:	--
Packaging:	Tube
Part Status:	Not For New Designs
Function:	Battery Monitor
Battery Chemistry:	Multi-Chemistry
Number of Cells:	--
Fault Protection:	--
Interface:	HDQ
Operating Temperature:	-20°C ~ 70°C (TA)
Package / Case:	8-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	8-TSSOP
Base Part Number:	BQ26231

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Introduction
The BQ26231PWG4 is a new power management integrated circuit (PMIC) for battery management. It is specifically designed for system solutions which require high flexibility and accurate control of battery current. This PMIC provides efficient voltage and current monitoring and protection for single- or multiple-cell batteries. It is designed with an 8-bit MCU and a variety of analog and digital peripherals, including temperature sensors and hall effect sensors. The BQ26231PWG4 also has a powerful host interface which allows real-time status reporting, as well as the ability to monitor and control battery cells in parallel.Application Fields
The BQ26231PWG4 is mainly used in applications that demand the highest level of control over battery current and accurate monitoring of the battery parameters. Its integrated features can be used in a range of multicell battery management systems, such as those found in consumer electronics, automotive, energy storage systems (solar, wind, hydro), and medical devices. The wide operating ranges of the BQ26231PWG4, its highly integrated solutions, and its flexibility make it an ideal choice for these kinds of applications.
Features
The BQ26231PWG4 is designed to provide high accuracy monitoring of battery cell voltages, currents, and temperatures. It offers a variety of analog, digital, and I2C interfaces for control and monitoring. It also uses advanced high-efficiency switching architectures for power conversion and management. Additional features include a battery protection circuit with programmable voltage, under voltage and over voltage thresholds, as well as short and overtemperature protection. The BQ26231PWG4 also offers excellent data logging capabilities, with real-time cell voltage, current, and temperature readings.Working Principle
The BQ26231PWG4 utilizes a number of switching circuits to regulate the current flow between battery cells and the load. It has two core elements: a voltage sensing circuit and an active current limiting circuit. The voltage sensing circuit is used to measure the battery voltage and to provide protection against over- and undervoltage. The current limiting circuit works in parallel with the voltage sensing circuit and regulates the current flow between battery cells and the load. The current limit is adjustable via a programmable resistor.The BQ26231PWG4 also offers a real-time data logging feature that continuously monitors and stores the cell voltage and temperature. This data logging feature helps to detect and eliminate potential problems before they become critical.Conclusion
The BQ26231PWG4 is an advanced battery management integrated circuit (PMIC) designed to meet the needs of high performance battery management systems. It combines efficient voltage and current monitoring and protection for single- or multiple-cell batteries with integrated MCUs, analog and digital peripherals, and powerful host interfaces. The wide operating ranges, high accuracy monitoring of battery cell voltages, currents, and temperatures, and the flexible design make the BQ26231PWG4 an excellent choice for a variety of applications.

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