TL7733BCDE4

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TL7733BCDE4 is a three-terminal integrated circuit that can be used as a power supply supervisor, providing a voltage monitoring and reset signal. Widely used in computers, peripheral control modules, civil products, automotive systems and other fields, the TL7733BCDE4 provides stable and reliable protection for systems.

Application Fields

The power supply supervisor TL7733BCDE4 has a wide range of applications.

• Computers: The TL7733BCDE4 is used to provide detection and reset signals when the computer encounters power failure, misoperation, overcurrent, etc. The power reset signal can be used to reset the system automatically, so as to avoid system crash and other risks, increasing the security of the system.
• Peripheral Control Modules: The TL7733BCDE4 can detect the power supply, environmental changes, working status and other conditions of the peripheral control module, providing reliable protection for the module, extending its service life and improving its reliability.
• Civil Products:The TL7733BCDE4 can provide voltage monitoring and reset for all kinds of civil products, preventing products from breaking down due to prolonged power failure, and providing an emergency power reset when the power supply is too low.
• Automotive Systems: The TL7733BCDE4 can provide resets and enable signals to the electronic control unit of relevant automotive system modules, ensuring safe operation of the system and reducing potential failure of the system.

Working Principle

The TL7733BCDE4 is a three-terminal integrated circuit and its typical application is shown in the figure below:

There are three pins of the TL7733BCDE4, VDD, Output, GND. When the power input voltage VDD is above the preset threshold voltage Vth, the output is high and the output signal "ON" is obtained; when the power supply voltage VDD is lower than the preset threshold voltage Vth, the output is low and the output signal "OFF" is obtained.

The Threshold Voltage Vth can be adjusted through the adjustable resistance R1 and the hysteresis resistance R2. R1 is used to set the low voltage threshold voltage (VLL) of the power supply, and R2 can adjust the hysteresis voltage VH. The hysteresis voltage VH and the low voltage threshold voltage (VLL) form a hysteresis voltage magnitude, and the output of the TL7733BCDE4 is low when the power supply voltage is lower than the low voltage threshold voltage VLL and high when the power supply voltage is higher than the hysteresis voltage VH.

The delay time of the TL7733BCDE4 can be adjusted by the delay capacitor C1 and the internal amplifier of the circuit. When the power supply voltage is higher than the hysteresis voltage VH, the capacitor C1 starts to charge. When the voltage of the capacitor is greater than the level of the internal comparator, the output signal "ON" is obtained.

The TL7733BCDE4 can provide overvoltage protection for the system, when the power supply voltage exceeds the higher limit, the amplifier will output an overvoltage signal, the system can use this signal to limit the upper limit of the voltage, thus providing the protection for the system.

Conclusion

The TL7733BCDE4 is a three-terminal integrated circuit that can be used as a power supply supervisor, providing a voltage monitoring and reset signal. It has wide applications in computers, peripheral control modules, civil products, automotive systems and other fields, providing stable and reliable protection for systems.

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