LM3502ITL-25/NOPB

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The LM3502ITL-25/NOPB is an integrated switch-mode LED driver designed to drive 1 to 4 series connected LEDs. It offers excellent LED brightness control by providing adjustable output current up to 700mA, while providing constant LED current regulation and less than 1% LED brightness ripple. The additional features of this LED driver such as input voltage regulation and wide voltage range output current make it perfect for automotive headlight applications, as well as display and ambient light applications. In this article, we will discuss the application field and working principle of LM3502ITL-25/NOPB.

Application Field of LM3502ITL-25/NOPB

This integrated driver is perfectly suitable for light emitting diode applications, driven by up to 4 series-connected LEDs. The integrated driver provides constant LED current regulation and a wide range of input voltages, and can be configured for FCC, IPX8 and NEMA4 certified accessories. This driver is suited for both lighting and industrial application, such as automotive headlights, decorative LEDs, street lamps, flood lights and parking lot lights. In addition, this driver can be used in ambient light sensors, displays and signage.

Working Principle of LM3502ITL-25/NOPB

The LM3502ITL-25/NOPB driver uses a switching power-supply architecture for LED light sources. It operates at a frequency of up to 1MHz, regulating the output current based on a sense resistor feedback network. The integrated driver features an adjustable output current up to 700mA and a wide input voltage range from 4.5 to 38V. For best performance, the LM3502ITL-25/NOPB driver employs a synchronous switching rectification technique, allowing high efficiency and low power loss.

The LM3502ITL-25/NOPB driver also provides an integrated soft-start feature, which allows the LEDs to slowly turn on, thus preventing inrush current and preventing them from being damaged. Additionally, this driver can offer a dimming range of up to 32 bits with a single I2C command. An over-temperature protection (OTP) feature is also included to prevent the driver from being damaged in the case of high temperature operation.

The LM3502ITL-25/NOPB is a highly efficient, low-noise and easy-to-use driver for LED lighting applications, providing excellent LED brightness control. This integrated driver has a wide operating temperature range from -40 to +125°C, allowing it to be used in a wide variety of applications. Additionally, this driver can be used in environments where NEMA4 certified accessories are required, making it a great choice for outdoor lighting.

In summary, the LM3502ITL-25/NOPB integrated driver is an excellent choice for powering LED lights in applications such as automotive headlights, signage, and displays. This driver offers adjustable output current up to 700mA, wide input voltage range, constant regulation of LED current, less than 1% LED brightness ripple, and over-temperature protection. Its wide operating temperature range, as well as its NEMA4 certification, make it a great choice for outdoor lighting applications.

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