MAX20090ATP/VY+

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Part Status:	Active

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Introduction

PMIC (power management integrated circuits) and LED drivers are becoming increasingly sophisticated, making them better than ever for integrating and controlling the brightness of LEDs. In particular, the MAX20090ATP/VY+ is one of the latest and most powerful LED drivers, capable of driving higher current levels and providing up to 24-bit brightness control. This article looks at the application field and working principle of the MAX20090ATP/VY+ LED driver.

Application Field

The MAX20090ATP/VY+ LED driver was designed for use in consumer electronics devices such as LED-backlit panels, notebooks, and displays. It is especially suitable for applications that require high current, high resolution PWM control because it is capable of driving up to 1A of current, with professional-grade 24-bit resolution. The device also features an integrated internal voltage regulator that can supply up to 3A of output current. In addition, the device is also suitable for automotive applications since it can accept an input voltage range from 8 V to 60 V and it has a wide temperature range from -40°C to +125°C. Thanks to these features, the device can be used in applications as diverse as automotive headlights, automotive interior lightening, automotive display backlights and automotive instrument backlights.

Working Principle

The MAX20090ATP/VY+ is driven by a 20 mA analog input signal, which is used to adjust the brightness of the LED. The 20 mA signal is translated into a PWM signal through an integrated N-channel MOSFET inside the chip. A high voltage boost controller is also integrated in the chip as a power supply, boosting the voltage and converting the current to the LED while maintaining a constant LED current and eliminating temperature difference.The device also has an integrated inductance-compensation system, which ensures a very stable LED current. This is done by constantly monitoring the input analog signal, and adjusting the inductance value to keep the LED current constant.

Conclusion

The MAX20090ATP/VY+ LED driver is a high-performance solution for LED lighting applications. It can provide higher current levels and 24-bit resolution, making it suitable for a wide range of applications. Additionally, the device has an integrated voltage regulator and inductance-compensation system to ensure consistently stable operation. With its wide input voltage range and temperature range, the MAX20090ATP/VY+ is the ideal LED driver solution for automotive headlight applications and other demanding LED lighting projects.

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