TL494CDR2

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The TL494CDR2 is an integrated circuit that is used as a Digital Controlled Switching Controller. It is a Pulse-width Modulated (PWM) voltage regulator, which is commonly used as a part of a DC-DC converter, or as a DC-DC LED driver. This voltage regulator has been widely-used across various application fields and industries, such as automotive, industrial, and military. The TL494CDR2 is a cost-efficient, reliable, and energy-efficient solution for voltage regulation.

A valuable advantage of this voltage regulator is the overall size of the integrated circuit and the number of components required. It requires a low number of external components, significantly reducing the size of the circuit board and simplifying the circuit design. The drive circuit for the switching transistors is included in the package and requires no external components.

The TL494CDR2 input voltage [VCC] can range from 10V to 40V, and the output current can range from 0.3A to 10A. It has an adjustable switching frequency [fSW] range from 500kHz to 1.2MHz. There is an internal temperature monitor which can be used to shut down the chip when it reaches a set temperature. The TL494CDR2 also has various output protection, such as internal foldback, over current protection, and over-temperature protection. Furthermore, it is designed for an operating temperature range from -40°C up to 125°C. All of these features make the TL494CDR2 a great choice for various output requirements.

One of the defining features of the TL494CDR2 voltage regulator is its Pulse-width Modulated (PWM) working principle. The internal oscillator generates high-frequency square waves, and the frequency control circuitry regulates their frequency precisely. This PWM square wave is used to control the output voltage by varying the on and off times of the switching transistors. The on-time and frequency of the PWM signal can be adjusted by the external pulse width modulator, and hence, the output voltage.

The TL494CDR2 is also equipped with a robust current limit circuit. This current limit circuit ensures that the current always remains within the specified limits. An internal comparator compares the voltage across an external resistor to the voltage on the op-amp, and when the voltage across the resistor exceeds the threshold voltage, the current limit active signal is set high, shutting down the error amplifiers.

Overall, the TL494CDR2 is a versatile voltage regulator, which is able to provide accurate, reliable and cost-efficient regulation. It is optimized for a wide input voltage range and robust protection protection. Thanks to its advanced design and low external component count, the TL494CDR2 is a great choice for any DC-DC converter or DC-DC LED driver application.

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