TC54VN2702EZB

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A supervisor chip, also known as System Management Bus (SMB) Chip, is a power management integrated circuit (PMIC) designed to supervise device power supply conditions and system reset conditions caused by voltage drop, current overload, and device reset sequences. The TC54VN2702EZB is an example of such a supervisor IC specifically used to monitor the operation of digital integrated circuits or devices.

Description

The TC54VN2702EZB is a fully integrated power supply monitoring IC for use in 3V to 5.5V systems. This device utilizes a thermally stable reference to monitor the condition of the supply voltage and its variations due to transient events. The TC54VN2702EZB monitors lower power supply conditions with an open drain active low RESET/Q output signal. The supervisor also functions as a digital voltmeter when the VMODE pin is connected to its external VCC voltage source. It is generally used in applications such as MP3 players, digital cameras, and portable audio players.

Application Field

The TC54VN2702EZB is used in applications where reliable supply voltage conditions and voltage monitoring are necessary. It offers feature set that is suitable for various applications to replace multiple voltage supervisor ICs, ensuring reliable and low power operation. Its open drain output signal can be connected to various devices in order to reset them and thus make the system more stable and efficient.

The TC54VN2702EZB is used in the automotive industry for fault protection and braking control. It is used in aircraft electronics for steady power supply and voltage monitoring. Industrial applications such as computers and robots require reliable power supply as well as voltage monitoring, and thus, it is also used in these systems.

Working Principle

The TC54VN2702EZB supervisor is composed of six functional blocks, each responsible for controlling different aspects of the system. The main components include the Thermal Monitor and Reset Generator, the Bandgap Voltage Reference, the Supply Voltage Detector, the Register, the Reset Forwarder, and the Reset Debouncer and Driver.

The thermal monitor and reset generator monitors the circuit temperature and initiates an output signal, either RESET or NRESET, to reset or power-down the system when there is an excessive temperature. The bandgap voltage reference monitors the system voltage, and in the event of an undesired voltage difference between GND and VDD, it generates a reference voltage. The supply voltage detector compares the system input voltage with the reference voltage and sends the output signal to the register. The register stores the state of the output signal, which is then further forwarded to the reset forwarder. The reset forwarder transmits the reset signal to all system components, which are then reset. The reset debouncer and driver filters out the noise to ensure a stable reset output.

Conclusion

The TC54VN2702EZB is a further development of the supervisor IC family. It provides an effective solution for various applications requiring reliable power supply and voltage monitoring. The chip is composed of different functional blocks that work together to detect changes in the power supply and to initiate a reset command, allowing for a smoother and more reliable system operation. As such, the TC54VN2702EZB is a perfect choice for applications where reliable power supply monitoring and voltage monitoring are necessary.

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