MAX7418EUA+

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The MAX7418EUA+ is a highly integrated, low power, 3−channel, high−performance, 3−bit voltage−controlled oscillator (VCO) for pulse−width modulation (PWM) applications. It is used in applications where power conservation is important, such as automotive and industrial systems. It is a low-cost solution that offers excellent performance and ease of use.

MAX7418EUA+ Application Field

The MAX7418EUA+ is ideally suited for use in applications where low power consumption and/or high speed are required. It is suitable for applications such as motor control, lighting control, and frequency control. The MAX7418EUA+ is designed to control the output level of a PWM signal in an efficient manner while consuming minimal power. It has an adjustable center frequency and a very fast channel-to-channel response time. It also has an inbuilt voltage reference, providing high accuracy and excellent stability over temperature. The MAX7418EUA+ allows the user to create a closed-loop control system with the lowest possible complexity, resulting in a very cost effective solution.

MAX7418EUA+ Working Principle

The MAX7418EUA+ is a 3-channel, 3-bit, low-power VCO, which operates in a voltage-controlled or frequency-controlled mode, depending on the design. In the voltage-controlled mode, a voltage is applied to input pins P1 and P2, while a reference voltage is applied to the external reference pin. The PWM output levels are generated by comparing the level of the external reference with the level of the voltage applied to the input pins. The levels of the output voltage can be adjusted to achieve the desired performance. The MAX7418EUA+ also features an integrated voltage reference, allowing for higher accuracy and stability than other voltage sources.

In the frequency-controlled mode, a reference frequency is applied to input pin P1 and P2, while a signal from a frequency-controlled oscillator is applied to input pin P3. The MAX7418EUA+ then adjusts the duty cycle of the PWM signal to control the output frequency. The frequency control range of the MAX7418EUA+ is 0.5 to 8kHz making it suitable for applications such as motor control, lighting control, and frequency control.

The MAX7418EUA+ also features an integrated charge pump that allows the user to increase the output level without the need for an additional amplifier. The integrated charge pump generates an output voltage of up to 18V and can be used to drive low-voltage loads, such as transistors and IGBTs. This allows the user to achieve higher levels of efficiency and performance with fewer external components.

Conclusion

The MAX7418EUA+ is a highly integrated, low power, 3-channel, high-performance VCO, ideal for pulse-width modulation applications. It is suitable for applications such as motor control, lighting control, and frequency control, providing excellent performance and ease of use. It features an integrated voltage reference, allowing for higher accuracy and stability over temperature. It also features an integrated charge pump, allowing for higher levels of efficiency and performance with fewer external components. It is a cost effective solution for power conservation applications.

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