TC54VN1902ECB713

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TC54VN1902ECB713 is a micro-power supervisory and reset circuit. It is widely used in electronic products with strict power requirements. It provides power supervision to electronic products, probes the power supply stability, and holds or resets the system microprocessor whenever necessary. This section describes the application range and working principle of TC54VN1902ECB713.

TC54VN1902ECB713 is a common type of power supply supervisory circuit and reset circuit. It is usually composed of two parts, namely reset and supervisory. The reset part can detect the power supply voltage. When the voltage is within the set range, it will not issue a reset signal. When the voltage exceeds the set range, it will issue a reset signal, thereby resetting the microprocessor and other components in the system. The supervisory circuit monitors the power supply voltage in real time and controls the pull-up current of the reset line at the same time. When the operating voltage is low, it sends out an active low voltage, which is set as a reset signal for power failure. Under normal circumstances, the supervisory circuit will output a high-moderate voltage to maintain the reset line.

TC54VN1902ECB713 is widely used in a variety of data communications, display, instrumentation, industrial and consumer applications, especially appropriate for applications where the power comprises of multiple sources, such as USB and IEC power supplies, or system boot applications with voltage sequencing requirements. This product is available in a 6-Pin SOT-23 package, providing a low cost, high integration solution with low power consumption. It features an active reset output for system reset, power clamp for ultraviolet irradiation, and adjustable reset and power failure thresholds.

TC54VN1902ECB713\'s working principle is the use of a remarkable feedback circuit. The feedback circuit is composed of a reference voltage generator, a threshold voltage supervisor, and a comparator. The reference voltage generator is mainly used to generate a certain stable reference voltage. The threshold voltage regulator can convert an external voltage into a certain value. The comparator is mainly used to compare the two values. If the voltage of external power supply is lower than the set value, the output of comparator will be low, so that the reset circuit will reset the microprocessor or other related components. While if the external power supply voltage is normal, the output of comparator will be high.

In summary, TC54VN1902ECB713 belongs to the PMIC – Supervisors family. It is mainly used to detect the local power line voltage and output the reset signal. TC54VN1902ECB713 has the advantages of low power consumption, superior electrical characteristics and mid-scale reset control. It is widely used in various types of low power devices, such as digital communication equipment, instrumentation, television and display products.

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