S-8250BAQ-I6T1U

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Power management integrated circuits (PMICs) is a class of integrated circuits that are used in controlling and managing electric power in electronic devices. Among them, battery management chips play an important role in power management. In face of the growing demand for better performance, greater efficiency and more integration, PMICs featuring powerful and integrated battery management are being actively developed. The S-8250BAQ-I6T1U is one such chip.

The S-8250BAQ-I6T1U is a three-channel Li-ion/Li-polymer battery charger designed for USB applications. It features 4.1V to 4.4V maximum charging voltage and up to 800 mA charge current. It also integrates a 5V linear regulator, with up to 5A continuous current and 10A peak current. The high integration of the IC saves PCBA space and reduces the need for additional components. Additionally, it comes with an adjustable input current limit, preset faults management and other safety features.

The S-8250BAQ-I6T1U can be found in a variety of USB-powered devices, such as mobile phones, tablet PCs, wearable devices, and more. Its broad range of charging voltage and current makes it suitable for most Li-ion and Li-polymer batteries. By integrating charging control, buck regulators and safety control on one chip, the S-8250BAQ-I6T1U simplifies the power system and optimizes the performance of battery-powered devices.

The working principle of the S-8250BAQ-I6T1U is based on highly efficient buck-boost conversion technology. This architecture uses an all-N-channel, low-RDSon totem-pole MOSFET to regulate the output voltage. The N-channel MOSFET is integrated on the chip with a power switch, which is used for charging and discharging of the battery. This high-efficiency charge pump architecture synchronizes the high-side and low-side drivers, allowing for a fast and reliable connection of the battery to the power supply and eliminating additional components.

The integrated power switch also provides several protection functions to ensure a safe charging process. These protections include input overvoltage protection, battery overvoltage protection, battery overheating protection, battery over-current protection and battery reverse-polarity protection. This ensures the devices powered by the S-8250BAQ-I6T1U are safe and reliable.

The linear regulator offers high accuracy as well as excellent load and line regulation. It also incorporates soft-start functionality and a wide input voltage range of 5V to 20V. This allows it to be used in applications such as USB power delivery and power bank applications.

In conclusion, the S-8250BAQ-I6T1U is a highly integrated battery management integrated circuit that offers great performance and features for USB-powered applications. It is designed for Li-ion and Li-polymer batteries and features charging control, buck regulators and a range of safety features. The chip offers reliable protection and high accuracy, making it an ideal solution for battery-powered devices.

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