S-8252ABB-M6T1U

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The S-8252ABB-M6T1U is a low-power addition to the battery management ICs available today. It is designed to provide precise real-time battery level indications, accurate voltage and current readings, and programmable charge protection. Its currently available in an 8-pin SOIC-8 package and can operate with a wide operating temperature range of -40°C to +85°C.

Application

The S-8252ABB-M6T1U is suitable for battery powered portable devices and is sophisticated enough to differentiate between trickle and fast charging. The chip is ideal for use in such devices as mobile phones, digital cameras, PDAs and others. It is also suited for low power applications where precise battery level readings are needed, its built in battery diagnostics provides detailed information on battery performance and state. Its accurate voltage and current readings make it an ideal component in applications where the performance of the battery must be monitored or managed.

Working Principle

The S-8252ABB-M6T1U has a unique one-wire slave-level bidirectional serial system. The serial system consists of a dedicated clock line, data line, and a ground line. The embedded microcontroller in the IC performs all the battery management functions, which include monitoring voltage, current, temperature and other battery variables, running of multiple parameters across multiple batteries and other related tasks.

The chip has four programmable regulators that manage the battery current, voltage and temperature. The internal voltage regulator can be set up to provide a constant system output voltage, and the current regulator protects the battery from overcharging and drains. The temperature-sensing regulator can detect and control any temperature that is outside of safe limits and the self-protection regulator will protect the chip against unintentional programming or operation.

The S-8252ABB-M6T1U also has a highly accurate voltage sensing system that can precisely measure the voltage at the battery terminals, ensuring that the power supply to the device remains constant and within a preset range. In addition, it is designed to overcome the challenge of varying battery terminals, which can cause voltage drops or battery irregularities.

The monitoring information gathered and regulated by the chip are programmed as 100 data points per battery and can be displayed at any specified period of time. The chip supports multiple charge protection mechanisms and adaptive fast charging technology to protect the battery from overcharging and over discharging.

In addition, an analog-to-digital converter on the chip can measure the actual capacitance of the battery and display it in real time using a built-in graphical LCD driver.

Conclusion

The S-8252ABB-M6T1U is a very attractive solution for battery management in portable devices due to its low power consumption, accurate readings and reliability. It is ideally suited for low power applications where precise battery level readings are needed, or to provide information on the performance and state of the battery, and its ability to differentiate between trickle and fast charging makes it a unique addition to the market. It is perfect for mobile phones, digital cameras, PDAs and other related devices, and its analog-to-digital converter provides an added bonus in that it can measure the actual capacitance of the battery and display it in real time.

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