Series:	Automotive, AEC-Q100
Packaging:	Tray
Part Status:	Active
Function:	Battery Monitor
Battery Chemistry:	Multi-Chemistry
Number of Cells:	12
Fault Protection:	Over Current, Over Temperature, Over/Under Voltage
Interface:	UART
Operating Temperature:	-40°C ~ 125°C
Package / Case:	64-LQFP
Supplier Device Package:	64-LFQFP (10x10)

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Introduction to MAX17843ACB/V+

Power management integrated circuits (PMICs) are widely used in many applications, ranging from consumer battery-powered devices to industrial equipment. The MAX17843ACB/V+ is a PMIC designed specifically for battery-powered portable equipment and vehicular applications. It is typically used in lithium-ion battery management systems and provides protection and monitoring functions for the battery and its circuit. This article provides an overview of the features and functions of the MAX17843ACB/V+, as well as its applications in battery management systems and its working principle.

Features and Functions of MAX17843ACB/V+

The MAX17843ACB/V+ is a Protection, Monitoring and Control Integrated Circuit (PMIC) designed for use in battery-operated portable devices. The device integrates a wide range of protection and monitoring functions, including:

• Battery Overvoltage Protection (BOP): This function prevents the battery from being overcharged and is adjustable within a ±1% range. It also provides a sensing circuit to monitor the battery\'s voltage and regulate the charging current accordingly.
• Overcurrent Protection (OCP): This function detects and limits inrush current and prevents damage to delicate components due to overcurrents.
• Cell Undervoltage Protection (CVP): The MAX17843ACB/V+ also protects the battery from deep discharging and detects when the voltage drops below a set level and shuts off the load circuit.
• Cell Overvoltage Protection (COVP): The MAX17843ACB/V+ monitors the battery voltage and prevents the battery from being overcharged. This ensures the longevity of the battery.
• Charge Termination: The MAX17843ACB/V+ can monitor the battery voltage and automatically terminate the charging once the battery is fully charged.
• Thermal Management: The MAX17843ACB/V+ monitors the battery\'s temperature and can shut off the load circuit if it gets too hot.

In addition, the MAX17843ACB/V+ offers an I2C interface for communication with battery monitoring and management systems, as well as an integrated die temperature sensor for temperature monitoring and control.

Application of MAX17843ACB/V+ in Battery Management Systems

The MAX17843ACB/V+ is optimized for use in lithium-ion battery management systems, and is used in a wide range of applications, from consumer electronics and automotive applications, to industrial and medical battery-powered equipment.In consumer electronics, the MAX17843ACB/V+ is used in smartphones, tablets, and handheld devices, and provides the necessary protection and monitoring functions to ensure safe and efficient operation of the device. In automotive applications, the MAX17843ACB/V+ is used in electric and hybrid vehicles, and provides protection to the vehicle\'s main battery, as well as its auxiliary battery for powering on-board electronic devices. In industrial applications, the MAX17843ACB/V+ is used to protect and monitor battery-powered equipment, such as industrial robots, medical devices, and portable electronics, from high currents and excessive voltages. The MAX17843ACB/V+ offers overcurrent protection and cell overvoltage protection, as well as charge termination and thermal management functions, to ensure safe and efficient operation of the equipment.

Working Principle of MAX17843ACB/V+

The MAX17843ACB/V+ monitors the battery voltage and current, and regulates the flow of charge and discharge current accordingly. The device integrates several protection and monitoring functions to prevent damage to the battery, as well as its circuit, from high currents, excessive voltages, and high temperatures.The MAX17843ACB/V+ has two main operating modes: the normal mode and the sleep mode. In normal mode, the device monitors the battery voltage and regulates the flow of charge and discharge current accordingly. The device also monitors other parameters and, when necessary, shuts off the load circuit to protect the battery. In sleep mode, the device regulation circuits are disabled and the battery is allowed to charge and discharge without interruption. However, the device continues to monitor the battery voltage, current, and temperature, and will shut off the load circuit if any of these parameters exceeds the allowable values.

Conclusion

The MAX17843ACB/V+ is a power management integrated circuit designed for use in battery-powered portable devices and vehicular applications. The device integrates several protection and monitoring functions, such as battery overvoltage protection, overcurrent protection, cell undervoltage protection, cell overvoltage protection, charge termination, and thermal management. In addition, the MAX17843ACB/V+ offers an I2C interface for communication with battery monitoring and management systems, as well as an integrated die temperature sensor for temperature monitoring and control. The MAX17843ACB/V+ operates in two modes, normal and sleep mode, and monitors the battery parameters to provide efficient protection for the battery and its circuit.

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