S-8209ACN-T8T1U

Power Management Integrated Circuit (PMIC) - Battery Management

A Power Management Integrated Circuit (PMIC) is an integrated circuit designed to manage the power of a platform. PMICs are used in consumer electronics to manage and switch power to the components of devices. There are different types of PMICs, each designed to meet the needs of a specific application or product. Battery management is one of these applications, and has a unique set of requirements to ensure the safety and longevity of the device. The Texas Instruments S-8209ACN-T8T1U PMIC is a device designed for the battery management in consumer devices such as smartphones, tablets, and wearables.

The S-8209ACN-T8T1U is an advanced dual channel battery management PMIC. It is designed to support 2-cell Li-ion/ Li-pol batteries, allowing them to operate in parallel, providing enhanced battery lifetime, increased battery run time, and improved safety of the device. The S-8209ACN-T8T1U also provides built-in protection against over-currents, over-voltages and thermal shutdown with a built-in temperature sensor. It also provides an advanced battery balancing algorithm to maximize the surplus energy and efficiently supply the system load.

Features of S-8209ACN-T8T1U PMIC

The S-8209ACN-T8T1U PMIC offers a wide array of features tailored for battery management applications. It provides very high efficiency, advanced monitoring and protection features, flexible control and synchronization, and a wide operating temperature range.

• High Efficiency: The S-8209ACN-T8T1U offers up to 94.6% efficiency with a wide input range.
• Advanced Monitoring and Protection: The device has a built-in smart thermistor to monitor the battery temperature. It also includes over-current, over-voltage, and thermal overload protection for the system in addition to a battery balancing algorithm.
• Flexible Control and Synchronization: The device can be configured for different battery types, such as Li-ion or Li-pol. It also provides synchronization between the two channels to enable dual-cell applications.
• Wide Operating Temperature Range: The device operates over a wide temperature range, from -40°C to +125°C.

Working Principle

The S-8209ACN-T8T1U PMIC is designed to manage the power supply of the system, ensuring that the correct flow of power is provided to the system components. The device has two channels, each connected to one battery cell. The device is powered by either cell, and the output is controlled by the control block. This block reads the input voltages of each cell, and generates a control signal which is sent to the power MOSFETs to control the output. The device can be programmed to provide different operating modes, such as boost and buck modes, based on the requirements of the system.

The device also includes a battery balancing algorithm. This algorithm monitors the cell voltages, and ensures that the cells are balanced, providing an even charge/discharge cycle for each cell, and ensuring that the cells are not over-discharged or over-charged. This protects the cells from damage, and helps to prolong their lifetime.

The device also includes advanced monitoring and protection features. It is equipped with a built-in thermistor which monitors the cell temperature to ensure that it does not exceed the maximum safe operating temperature. The device also provides over-current, over-voltage, and thermal overload protection, which is designed to shut off the device in case of any faults, and prevent any damage to the system components.

Conclusion

The Texas Instruments S-8209ACN-T8T1U PMIC is an advanced dual-channel battery management PMIC for consumer electronic devices. It features high efficiency, advanced monitoring and protection features, flexible control and synchronization, and a wide operating temperature range. The device is designed to ensure the battery’s safe operation, and provide reliable and efficient power supply to the system.