DS2782G+T&R

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Integrated circuit (IC) technology has been widely applied in the circuit design of power management IC (PMIC) - Battery Management. Through the use of integrated circuit designs, a variety of techniques can be applied which allow for improved performance, smaller size and lower cost. One of the most popular PMICs on the market is the Dallas Semiconductor DS2782G+T&R. This device requires very little external components, and is optimized to provide a simple and specialized solution to automotive and other non-portable battery management applications.

The DS2782G+T&R is a stand-alone, linear Li-Ion fuel gauge controller. It is capable of accurately measuring the amount of charge remaining in the battery, and controlling charge or discharge operations based on the cell’s temperature. The device also provides a low-cost solution for measuring and controlling battery thermal cycling. It has an integrated thermistor to monitor cell temperature, providing an accurate and reliable method to protect the battery from over-temperature conditions. It is well suited for high-power battery packs, as it can handle up to 12.5A for charging, and 12.5A for discharging.

In terms of application field, the DS2782G+T&R PMIC has an extremely wide usage area. It is used in automotive vehicles, consumer electronics product and cordless tool applications. The device can also be used in medical equipment, portable GPS systems, and other non-portable battery management applications. These products need an economical, reliable, and accurate way to measure the remaining charge in the battery, or to control the charging or discharging of the battery. It can be used to easily monitor low-power battery packs or high-power battery packs, in both single and multi-cell battery systems.

The DS2782G+T&R PMIC works as a fuel gauge controller, effectively measuring the remaining battery charge based on the voltage, temperature, and current in the battery. This is done through the use of its proprietary Linear Gauge algorithm, which allows it to accurately measure the remaining charge in the battery, regardless of its temperature or the type of cells being used. The Linear Gauge algorithm is supplemented with the Temperature Rollover mitigation feature, which adjusts the battery gauge readings when the battery temperature exceeds an upper or lower limit.

The device can be configured for a multi-cell monitoring system in either a stack or limited-range configuration. When operating in a limited-range configuration, the DS2782G+T&R can interface with several analog-to-digital conversion (ADC) channels, to monitor multiple battery cell voltages. The device can monitor up to 12.5A of both charging and discharging current, while providing accurate temperature and charge readings based on the current, voltage, and temperature of each cell.

The DS2782G+T&R PMIC also provides several features to facilitate flexible control of the charging and discharging of the battery. The device supports “cold charging”, or the charging of a battery when it reaches temperatures colder than ambient, and can change its operation depending on the battery temperature and amount of remaining charge. It also includes an integrated charge-time counter, which helps to monitor and control the charger\'s time-to-charge and time-to-complete parameters. Finally, the device includes an over-discharge protection circuit, to protect the battery from low-voltage shutdown.

In conclusion, the DS2782G+T&R PMIC from Dallas Semiconductor provides an ideal solution for automotive, consumer electronic and cordless tool applications that require an economical and reliable way to measure the remaining charge in a battery, or to control the charging/discharging of a battery. The device requires little external components, and integrates an accurate Linear Gauge algorithm and Temperature Rollover mitigation features, allowing it to accurately measure the remaining charge in the battery, regardless of its temperature or the type of cell being used. In addition, the device can monitor up to 12.5A of both charging and discharging currents, and includes several features to facilitate flexible control of charging and discharging processes.

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