LM3639AYFQEVM

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The LM3639AYFQEVM is an Evaluation Board featuring the LM3639 LED driver, an advanced, high-efficiency current-mode linear LED driver. This board is designed for simple, rapid integration of LED driving applications into design and evaluation processes. The LM3639AYFQEVM includes several features to improve LED driver performance and reliability, including adjustable output current, adjustable dimming current, and Driver Calibration and Monitor (DCM) Mode.

The LM3639AYFQEVM board is designed for applications requiring up to 10W of LED power. It consists of a LM3639 LED driver, one of the industry’s highest-efficiency current-mode Linear LED drivers, and several components to support the evaluation board operation. The board has an integrated reference voltage circuit, indicating signal and startup circuit, frequency/duty cycle adjust circuit, as well as an isolated MBI5023 pulse-width-modulated (PWM) dimming interface and an integrated protection circuit.

The LM3639AYFQEVM evaluation board includes an integrated 500mV reference voltage circuit, which allows users to set the LED output current and the dimming current accurately. The system also includes an adjustable output current regulator circuit, allowing users to change the LED output current without any additional external components. Additionally, the LM3639AYFQEVM evaluation board also features Driver Calibration and Monitor (DCM) Mode, which allows users to measure the LED drivers current accuracy and output voltage accuracy as well as LED efficiency.

The LM3639AYFQEVM is ideal for LED designers, who require an efficient, simple, and reliable solution for LED driving applications. The LM3639AYFQEVM evaluation board features several features, such as adjustable output current, Driver Calibration and Monitor (DCM) Mode, and adjustable dimming current, that enable LED designers to more effectively evaluate and develop LED driving applications.

Working Principle: The LM3639ATYFEVM Evaluation Board uses the LM3639 LED driver a current-mode LED driver with high efficiency and low output voltage range. The LM3639 is able to drive both high- and low-current LEDs. It has an adjustable output current ranging from 10mA to 10A and can drive up to 10W of LED power. To operate the LM3639ATYFEVM, simply connect the input voltage and output voltage of the power supply to the evaluation board, and set the external resistor (D3) to the desired output current value. The frequency/duty cycle adjust circuit is used to adjust the PWM dimming level. The integrated reference voltage circuit is used to accurately set the output current and the dimming current. The LM3639ATYFEVM also features a Driver Calibration and Monitor (DCM) Mode that allows users to measure the output current accuracy, output voltage accuracy, and LED efficiency.

Overall, the LM3639ATYFEVM evaluation board is an excellent choice for LED designers requiring a simple, reliable, and efficient solution for LED driving applications. With its adjustable output current and adjustable dimming current, as well as its Driver Calibration and Monitor (DCM) Mode capabilities, the LM3639AYFQEVM is an ideal solution for evaluating and developing LED driving applications.

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