DS2786BG+T&R

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Battery management is a critical factor in achieving long-lasting and reliable performance of an electrochemical power source, such as rechargeable batteries. The DS2786BG+T&R is a compact, cost-effective battery monitoring and protection solution for applications with up to four-cell battery packs. This battery management IC from Maxim Integrated offers a high-accuracy current measurement system and a range of battery protection functions. It is used for automotive, consumer, industrial, and medical battery management applications.

DS2786BG+T&R combines a linear current sense amplifier, an I²C digital interface, and a battery protection circuit. It is suitable for monitoring and protecting lithium-ion, LiFePO4, lead acid, nickel-hydride and lithium polymer batteries. It enables precise current measurement and can protect the battery pack from minimum and maximum voltages, malfunctioning cells, and over-current and over-temperature conditions.

Working Principle

The DS2786BG+T&R operates with two types of current sense amplifiers: the linear current sense and the shunt current sense. The linear current sense amplifier is designed to measure the output current of the battery pack, who has a low internal impedance and a wide input operating range (1uV to 600mV). The shunt current sense amplifier is meant for measuring the voltage drop across a shunt resistor for current monitoring. It has a wide input operating range of 1uV to 200mV, and can be configured for either an AC- or DC-coupled operation.

The chip also features a low-side MOSFET that is used to protect the battery pack from exceeding the maximum voltage or current. This MOSFET is controlled by the control register. This register can be programmed to setup the maximum voltage, the current sense amplifier sampling rate, the over-temperature threshold and other protection settings.

The chip also includes an I²C interface that can be used to read the voltage, current, and temperature measurements from the chip. The measurements can then be used to calculate the amount of energy left in the battery pack. Additionally, the chip can generate a blinking LED indication for an under-temperature warning.

Application Field

The DS2786BG+T&R provides cost-effective and reliable battery protection for a wide range of applications. It can be used in automotive, consumer, industrial, and medical battery management applications. It is especially useful for applications that require precise current monitoring and protection of high-end battery packs.

In automotive applications, the DS2786BG+T&R is used to protect the battery pack in electric vehicles. It can monitor and protect the battery pack from overvoltage, over-current, and over-temperature conditions. Additionally, the chip can be used to accurately measure the output current.

In consumer and industrial applications, the DS2786BG+T&R can protect battery packs from short-cicuiting, battery overvoltage, and over-temperature conditions. Additionally, the chip can also be used to monitor the health of the battery pack and provide precise current measurements for efficient battery management.

In medical applications, the chip can be used to protect battery packs from over-temperature, over-voltage, and over-current conditions. Additionally, the chip can be used to provide precise current measurements for accurate energy management.

The DS2786BG+T&R from Maxim Integrated is a compact, cost-effective battery monitoring and protection solution that can be used for a wide range of applications. It offers a high-accuracy current measurement system as well as a range of battery protection functions. It can be used to protect and monitor battery packs in automotive, consumer, industrial, and medical applications.

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