S-8241ABIMC-GBIT2G

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Power management ICs, or PMICs, are important components used in mobile power systems and other electronic systems. The S-8241ABIMC-GBIT2G is a PMIC with Battery Management from Rohm Semiconductor. This chip is used in high-end devices with medium and low voltage detection, battery voltage monitoring, and active error handling.

Application Field

The S-8241ABIMC-GBIT2G is a high-voltage system PMIC, which is especially suitable for applications like lead-acid battery management systems, and programs that require precision voltage detection and charge control. Additionally, embedded systems with ASICs and FPGAs may benefit from the device’s low-voltage monitoring and reporting capabilities.

The chip is designed to provide 10-bit precision current sampling and 4-bit precision voltage measurement, allowing for accurate reporting of charge and discharge conditions.

Working Principle

The chip has 2 main components, the analog front-end and the digital control logic. The analog front-end measures the current and voltage of a battery, while the digital control logic implements the charging and discharging algorithms to control the power flow of the power system.

On the analog front-end, the S-8241ABIMC-GBIT2G features a 10-bit ADC for precise current sampling, as well as a 4-bit voltage detection unit for high-precision voltage and current measurement. By combining multiple digital outputs and a DIN connection, the device can detect and report up to 8 different battery states.

The chip also includes integrated digital logic for active control of the power system. This includes logic for controlling charge state, adjusting the charging character, limiting current and voltage levels, and setting appropriate thresholds to initiate charging and discharging. In addition, the S-8241ABIMC-GBIT2G also provides four different views of the system state and voltage levels, such as: high-voltage, low-voltage, over-voltage protection and battery aging. Also, a 16-bit reset register is embedded in the chip, allowing the user to reset the system to a particular state.

The chip can also be used to trigger external events, such as circuit breaker opening. By monitoring the voltage and current of the battery, the S-8241ABIMC-GBIT2G can detect faults and initiate circuit breakers to protect the system from damage.

Conclusion

The S-8241ABIMC-GBIT2G from Rohm Semiconductor is a power management IC that can be used for medium and low voltage detection, battery voltage monitoring, and active error handling. The device features 10-bit precision current sampling and 4-bit precision voltage measurement, as well as integrated digital logic for active control of the power system. This chip is designed for use in lead-acid battery management systems, and other embedded systems with ASICs and FPGAs.

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