BD4726G-TR

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The BD4726G-TR is a power management integrated circuit (PMIC) from Rohm Semiconductor that is used in a variety of application fields including consumer, industrial, medical, and automotive. The device has a variety of features including pre-programmed reset timing, a watchdog timer, and a programmable supply breaker. Its primary purpose is to guarantee reliable power supply to the electronic system including the microcontroller. The device is mainly used as a supervisor, which means it is responsible for controlling power supply regularly and preventing possible malfunctions.

Functionality

The BD4726G-TR provides a few essential power management functions. Firstly, it can provide circuit protection by monitoring the input voltage of the embedded system. If the voltage drops below a certain threshold, the device will shut off the power supply, in order to protect the microcontroller from any damage that might otherwise be caused by the low voltage. Secondly, the device also assists with power-on reset (POR). When the voltage is restored and reaches the threshold, the device will send a signal to the microcontroller, alerting it and allowing it to start the boot process.

The BD4726G-TR also provides a selectable reset timer that determines how long the microcontroller should remain in the reset state. This timer can be adjusted depending on the application. Additionally, the device includes a watchdog timer which can detect any malfunctions in the system that might cause the microcontroller to freeze; if this happens, the device will reset the system, providing an enhanced level of fault protection.

Operation Precess

The BD4726G-TR works in conjunction with the microcontroller, monitoring the voltage of the input power supply. When the voltage reaches the shutdown threshold, the device sends a signal to the microcontroller to alert it. Meanwhile, the voltage on the reset monitor pin falls and the reset timer begins counting down. After the programmed time is reached, a reset signal is generated by the device and sent to the microcontroller, forcing it to remain in the reset state until the voltage is restored and reaches the threshold again.

The device also has a watchdog timer, which is used to detect any malfunctions in the system. If the timer detects any occurrence of malfunction, it will send a signal to the microcontroller, resetting the system and allowing it to start again. This ensures reliable operation of the system even in emergency situations.

The BD4726G-TR also has a programmable supply breaker, which can be used to configure the system in such a way that the microcontroller only has access to a certain amount of power, which can be set by the user. This allows for more efficient system management and can help reduce the risk of overloads, thus making the system more stable.

Benefits

The BD4726G-TR provides several useful benefits to its users. Firstly, it helps ensure reliable operation of the system by providing circuit protection and ensuring POR, watchdog timer, and reset functions. Secondly, its supply breaker feature allows the user to control how much power is available to the microcontroller, making it possible to optimize the system performance and ensure efficient system management. Finally, its flexibility and wide range of features make the BD4726G-TR an ideal solution for a variety of applications.

Conclusion

The BD4726G-TR is a power management integrated circuit (PMIC) from Rohm Semiconductor that is mainly used as a supervisor, responsible for controlling power supply regularly and preventing possible malfunctions. The device has a variety of features, including pre-programmed reset timing, a watchdog timer, and a programmable supply breaker. It provides several useful benefits including circuit protection, POR, watchdog timer, and reset functions, enabling users to ensure reliable operation of their system. Its supply breaker feature also allows for more efficient system management and its flexibility makes it an ideal solution for a variety of applications.

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