TPS3126E18DBVR

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Supervisors are one of the most important components in the power management integrated circuit (PMIC) that is external to the microcontroller. The TPS3126E18DBVR is a low-power supervisor circuit specially designed for use in the embedded system. It is a three-pin device that features low power, small size and simple configuration. It is available in SOP, SOT-23 and DFN package.

The application field of the TPS3126E18DBVR is broad, including but not limited to medical systems, consumer electronics, automotive and industrial applications. In the medical system, it can protect the mains equipment from being damaged due to over voltage or short circuit, while in consumer electronics it can protect the equipment from being over charged which would cause damage. In automotive applications, it can help monitor the system temperature to protect the device from overheating. Finally, in industrial applications, it can be used to control the output voltage of the system and improve system reliability.

The working principle of the TPS3126E18DBVR is quite simple. It consists of a fuse, a resistor, and a transistor. The resistor serves as the load, while the transistor switches the voltage signal from the power source and the resistor. When the input voltage is within the regulated range, the transistor is switched on and current flows through the resistor. When the input voltage exceeds the regulated range, the transistor turns off and the voltage signal is cut off, thus providing protection for the system.

The supervisor circuit has three main functions: voltage monitoring, latching and reset. The voltage monitoring function monitors the input voltage, and when it is outside the regulated range, it immediately activates the latch and reset functions. The latching function disables further current flow through the device, preventing the system from further damage, while the reset function restores the device after the input voltage returns to the normal range.

The TPS3126E18DBVR is a low-cost, low-power supervisor circuit that is small in size and simple to configure. It is ideal for embedded systems, with its wide application range and easy-to-understand working principle. It is a reliable and efficient way to protect the system from damage due to excessive input voltage.

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