LM3519MK-20 High-Efficiency LED Driver

The LM3519MK-20 is a state-of-the-art LED driver from Texas Instruments, designed to provide a high-efficiency solution for driving LEDs in a variety of applications. This compact and versatile driver is suitable for powering single or multiple LEDs in portable devices such as smartphones, tablets, and other handheld devices where power efficiency and space constraints are of paramount importance.

This advanced driver operates with an input voltage range from 2.7V to 5.5V, making it adaptable to a wide array of power sources, including single-cell lithium-ion batteries. The LM3519MK-20 is capable of delivering a constant current to the LED, which ensures consistent brightness and improves the overall performance of the lighting system.

The device features an integrated 1.2MHz fixed-frequency PWM boost converter, which minimizes the size of external components due to the high switching frequency. Additionally, it includes an internal power switch and a current sense circuit, which further simplifies the design and reduces the external part count.

One of the key benefits of the LM3519MK-20 is its support for ambient light sensing, which allows the brightness of the LED to be adjusted automatically based on the surrounding light conditions, enhancing the user experience while conserving power. The driver also supports analog and PWM dimming, providing designers with flexibility in controlling the brightness levels of the LEDs.

Safety features are also embedded within the LM3519MK-20, including over-temperature protection, LED open-circuit protection, and under-voltage lockout, which helps to ensure the longevity and reliability of the end application.

The driver is available in a tiny 10-bump micro SMD package, which is ideal for space-constrained applications. The LM3519MK-20 is a testament to Texas Instruments' commitment to providing innovative, high-performance integrated circuits that meet the ever-evolving needs of modern electronics.