LTM8042IV#PBF

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LED Drivers are a type of semiconductor components that are used to regulate the amount of current flowing through LEDs in order to ensure a consistently bright light output. The LTM8042IV#PBF is a low voltage, highly efficient DC/DC converter specifically designed for powering high-brightness LEDs and aiding in the design of power supplies.

Application Field

This driver is ultra-small and operates with efficiency up to 94.8% while delivering 2A of output current, making it perfect for small, low power LED circuits. Furthermore, it is optimized to work with common LED color mixes such as whites, reds, oranges, greens and ambers as well as high power LED bulbs. It also features a wide 4.5V to 42V input voltage range, making it useful for a wide range of applications. These include, but are not limited to, automotive lighting, backlighting (LCD, advertising displays), industrial and commercial lighting, special-effect lighting, architectural lighting and stage lighting.

Working Principle

The LTM8042IV#PBF incorporates a buck-boost topology that allows it to provide constant LED current, regardless of input voltage or LED Vf. The switching frequency is internally set to 500kHz, making it suitable for small form factor applications that require minimum number of external components. It also features a programmable 40V maximum LED voltage, as well as short-circuit protection, over-temperature protection, over-voltage protection and under-voltage protection. Furthermore, it contains an adjustable soft-start feature that limits inrush current and helps to avoid inrush-induced damage to external components. As with all LED drivers, it should be noted that the power dissipation is highly dependent on the operating temperature of the surrounding environment.

In conclusion, the LTM8042IV#PBF is a highly efficient driver designed for powering high-brightness LEDs in a wide range of applications. Its wide input voltage range, high switching frequency and protection features make it a good choice for those looking for a reliable and energy-efficient LED driver.

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