MAX1651ESA+T

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Max1651ESA+T is a high-performance DC-to-DC switching controller with internal switch made and precisely matched to it, making it suitable for portable electronic equipment and other applications that need efficient power management. It provides high accuracy regulation and high conversion efficiency and can adapt to input voltage range from 3V to 25V. It also includes a fast response to dynamic load change, which makes it ideal for battery-operated applications and resistance to inadvertent load disconnection or short circuit. In this article, we’ll take a closer look at the application field and working principle of Max1651ESA+T.

Application Field

Max1651ESA+T is ideally suited for handheld, laptop, and cellular phone batteries, as well as other applications such as digital palmetto construction, in-load circuits, automotive electronics, etc. Its internal power switches make it ideal for traditional linear regulators, providing high efficiency and low noise. Its high switching frequency operation, low noise operation, accurate local regulation, and low standby current consumption make it a perfect cost effective solution for systems that require maximum efficiency from minimal power source.

Working Principle

Max1651ESA+T works based on Pulse Width Modulated (PWM) switching control. Its sensing circuit senses the voltage difference between the inductor current and the output voltage, then modulates the PWM signal to adjust the duty ratio to reach the desired output voltage. Amplifier module maintains the duty ratio within a given range with respect to control voltage. In this way, it maintains a steady output voltage even when the load or input voltage level is changing. Another advantage of this technique is it offers low ripple and low noise operation.

Its input voltage range is from 3 to 25V, enabling it to work with source from batteries, USB, AC–DC adapter, and other power sources. Max1651ESA+T also features adjustable switching frequency for flexibility, low startup current for better energy management, and EMI optimized gate drive for improved EMI performance.

Conclusion

Max1651ESA+T is a high-performance DC-to-DC switching controller with internal switch, which provides high accuracy regulation and high conversion efficiency. It is ideally suited for handheld, laptop, and cellular phone batteries, as well as other applications such as digital palmetto construction, in-load circuits, automotive electronics, etc. Its features include adjustable switching frequency, low startup current for energy management, and EMI optimized gate drive for improved EMI performance, making it an ideal solution for power management in portable electronics.

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