BQ2085DBTR-V1P3

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Power management ICs (PMICs) play an increasingly important role in controlling power in a variety of electronics applications. The BQ2085DBTR-V1P3 PMIC from Texas Instruments is an example of an advanced power management integrated circuit (IC) designed to extend battery life in single-cell Li-ion battery-powered portable systems. This PMIC offers very low power consumption and efficient battery charging, together with a host of other features and functions.

Description of the BQ2085DBTR-V1P3

The BQ2085DBTR-V1P3 is a PMIC optimized for single-cell Li-ion rechargeable battery-powered applications, such as cell phones, tablets, and other portable devices. This PMIC integrates all of the charge, monitor, and protection functions needed for battery management (BMS). It comes in a 10-pin thin QFN package that is thermally optimized for low-power applications. The BQ2085DBTR-V1P3 PMIC can support up to 2A charge current with standoff voltage accuracy down to 0.2%.

The features of the BQ2085DBTR-V1P3 include input current monitoring and control, charge voltage regulation, charge current regulation, pre-charge, trickle charge, secondary protection, and battery monitoring. It also includes reverse-boost and reverse-discharge functions, and a 9-bit ADC that supports battery voltage, battery temperature, and system voltage monitoring. Other features include fault protection and status output.

Applications and Working Principle of the BQ2085DBTR-V1P3

The BQ2085DBTR-V1P3 PMIC is suited for a wide range of single-cell Li-ion battery-powered portable systems. It is particularly well suited for applications such as mobile phones, portable media players, digital cameras, and other consumer applications requiring long battery life. The PMIC integrates all of the functions needed for efficient and reliable battery management, reducing the complexity and cost of designing and manufacturing battery-powered portable systems.

The BQ2085DBTR-V1P3 PMIC has a charging capability of up to 2A with a voltage accuracy of 0.2%. The PMIC also has a wide input voltage range of 6V inductive and 4.25V non-inductive inputs, allowing the device to operate efficiently with an AC adapter or USB port. The BQ2085DBTR-V1P3 PMIC also features reverse-boost and reverse-discharge functions that support system-level features such as data safe mode, low-power mode, and system hibernation. Additionally, it includes an integrated DAC and ADC that support advanced system monitoring and data logging.

The BQ2085DBTR-V1P3 PMIC also supports secondary protection, which safeguards against input overvoltage, overcurrent, and overtemperature conditions. This ensures that the system is protected from faults or other conditions that could cause the system to become unstable or unreliable. This secondary protection is combined with nine monitor and control lines that can be used to detect and diagnose system errors. Additionally, the PMIC uses a dedicated charge and monitor output to monitor and detect weak battery cells.

The BQ2085DBTR-V1P3 PMIC integrates many of the features and functions needed for efficient and reliable battery management in a small, low-power package. The PMIC is capable of efficiently balancing the charge and discharge cycles of the battery while also protecting the system from damage and instability. This PMIC is well suited for a variety of single-cell Li-ion battery-powered applications, providing reliable and efficient power management.

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