S-8209AAO-T8T1S

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PMIC - Battery Management

The S-8209AAO-T8T1S is an Energy-Source System IC for monitoring and controlling the flow of power to multiple-source battery systems. It includes a linear regulator, buck regulator, connector charger, PD controller, and an analog load switch monitor.

This device can simultaneously monitor and control multiple-source batteries such as Li ions, NiMH, LiFePo, LiPoly, and Li-Cylindrical while simultaneously regulating the current flow to each source. The device integrates a charge state monitor with three-step detection accuracy, a reverse discharge control circuit, and a dynamic voltage balancing circuit.

Applications

The S-8209AAO-T8T1S Energy-Source System IC is suitable for use in home appliances, systems that require multiple source power supplies, and battery systems. These applications include personal computers, notebooks, tablet PCs, smartphones, cameras, camcorders, and digital cameras.

The device is also suitable for use in medical devices, lighting equipment, automotive systems, home electronics, and other products that require efficient and reliable power management.

Working Principle

The S-8209AAO-T8T1S Energy-Source System IC is designed to provide precise current regulation and efficient power management for multiple-source battery systems. It utilizes a linear regulator, buck converter, and connector charger, which are all individually programmable to meet the different needs of different applications.

The device integrates a charge state monitor with accuracy of up to three steps, a reverse discharge control circuit, and a dynamic voltage balancing circuit. The current regulation logic utilizes a fixed voltage and feed-forward control loop, while the connector charger uses a PWM control loop and an on-chip error amplifier.

The device supports multiple battery systems and prevents over-voltage and under-voltage conditions by adjusting the output voltage and current within a limited range. It also prevents over-charging and over-discharging of the battery system by monitoring the charge state and dynamically balancing the voltage. When the battery system is full, the device switches between the two sources of power to optimize the system. The device is also equipped with protective functions such as over-current protection, short-circuit protection, and thermal protection.

Conclusion

The S-8209AAO-T8T1S Energy-Source System IC is an ideal solution for applications that require multi-source power supplies and efficient power management. It offers precise current regulation and efficient power management, while providing protection against over-voltage and under-voltage conditions. It is suitable for use in home appliances, medical devices, automotive systems, and other systems that require multi-source power.

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