BQ25703ARSNR

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BQ25703ARSNR Application Field and Working Principle

The BQ25703ARSNR is a highly integrated Li-ion battery management and protection circuit. It is an integrated solution for mobile connected devices, including smartphones, tablets, and wearables, protecting the battery from short circuit and over-charging conditions.

The BQ25703ARSNR offers a wide range of features, from automatic battery balancing, to over-current and over-temperature suppression. It is a highly integrated power management integrated circuit (PMIC) that provides safety features, battery protection, and charging functions in a compact 3mm x 3mm WLCSP package.

Application Field

The BQ25703ARSNr is well-suited for a variety of applications, including mobile devices, portable audio players, and wearables. Its integration saves board space, cost, and design effort when compared to discrete power management solutions, as well as providing an enhanced feature set and enhanced system reliability.

The BQ25703ARSNR integrates a digital high-voltage control loop. This provides extended system flexibility and control, allowing the device to efficiently manage charging, balancing, and system power distribution by providing fast response to dynamic inputs and environmental changes.

Working Principle

The BQ25703ARSNR provides a complete charging and protection solution for Li-ion batteries. It is based on an analog-to-digital converter (ADC) and a digital control loop, for accurately monitoring and controlling the system. The device is designed to provide an accurate and reliable mechanism for monitoring and regulating the charging of Li-ion batteries.

The BQ25703ARSNR integrates the necessary components for robust system control. It includes a high-accuracy current sense amplifier, low-power voltage-regulating converters, and limits regulating power to the Li-ion battery. It also includes a secure safety switch, a distributed resource-balancing system, enabling the charge/protection circuit to more efficiently and safely manage the power system.

The BQ25703ARSNR monitoring and protection features provide reliable protection against over-temperature and over-voltage conditions. It has a wide operational temperature range that supports most applications, and its programmable charge termination current and charge termination timer, provide power management flexibility.

Conclusion

The BQ25703ARSNR is a highly integrated PMIC that provides safety features, battery protection, and charging functions in a compact 3mm x 3mm WLCSP package. It can provide high accuracy and reliability in battery charging and protection applications, eliminating the need for larger and more costly power management solutions. The integrated features and programmable control architecture provide flexibility, allowing the device to be easily customized for a wide range of applications.

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