BQ20Z95DBT

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The BQ20Z95DBT is one of Maxim Integrated’s low-power system-on-chip (SoC) battery management controllers intended for use in portable devices and battery packs. It provides advanced battery protection, monitoring, and power management, while consuming very little power.

PMIC - Battery Management Applications

The BQ20Z95DBT is primarily intended for use in portable devices requiring a high level of battery protection, monitoring, and power management. It is ideal for use in laptops, cell phones, tablets, digital cameras, wearables, and many other consumer electronics applications. It is also well suited for medical, industrial, and automotive applications. Specifically, the device provides protection from overvoltage, overcurrent, temperature rise, deep discharge, and other battery-related issues. In addition, it is designed to function as a fuel gauge, providing simultaneous overcharge and overdischarge protection, and other features such as cell voltage monitoring and system wake-up.

Working Principle of the BQ20Z95DBT

The BQ20Z95DBT integrates a variety of advanced features to provide superior protection and power management capabilities. This device uses an internal buck converter which intelligently optimizes the charging current and voltage based on the battery’s state-of-charge (SOC). This ensures that the battery remains in a safe operating window and maintains the longest possible battery life. It also includes an open drain gate drive output, allowing for accurate monitoring of the cell voltage and setting of appropriate voltage cutoffs. In addition, the device includes an overcurrent measurement circuit with adjustable voltage thresholds to guarantee safe operation.

The BQ20Z95DBT supports USB OTG and proprietary bus systems, as well as integrated fuel gauging and other advanced power management and protection features. The device is compatible with Li-ion and Li-polymer battery chemistries, and supports 2-4 cell configurations. Other features of the BQ20Z95DBT include pre-conditioning, sleep, and resume technology, cold charge capability, intelligent power source selection and recharge cycle count, and peak current protection.

Conclusion

The BQ20Z95DBT is a powerful battery management system-on-chip (SoC) with a wide range of applications. It provides advanced protection, monitoring, and power management capabilities, with very low power consumption. It is suitable for a variety of devices, from laptops and cell phones to medical and automotive applications. In addition to advanced protection, the device also offers pre-conditioning, sleep, and resume technology, cold charge capability, intelligent power source selection and recharge cycle count, as well as peak current protection.

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