LT8391HFE#PBF

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The LT8391HFE#PBF is an integrated driver for multi-colored high power light emitting diodes (LEDs). This device is a PMIC - LED driver, particularly suitable for motor vehicles, automotive and automotive aftermarket applications. It is capable of controlling a wide range of color combinations and integrating various other features such as overvoltage and undervoltage protection, thermal shutdown and short-circuit protection.

The LT8391HFE#PBF is a constant current regulator with a high dynamic range. It provides excellent regulation of the output current from 0 A to 1.5 A with a low 0.1% current ripple. The output current is adjustable by external resistors or with logic signals. The device is flexible and supports several different operating modes, such as PWM or analog dimming and a range of programming and power options.

The operating principle of the LT8391HFE#PBF is based on a simple switching power supply design. It uses an oscillator to generate PWM pulses to drive switch transistors. The voltage between the drain and the source of the transistor is regulated such that the voltage across the LED string is kept constant. This ensures a constant current while providing a high efficiency.

The LT8391HFE#PBF is also capable of controlling multiple strings of LEDs. This feature is particularly useful for applications where multiple LED strings are required to produce a full range of colors. It can also be used for applications that require complex color changes and color sequencing. Additionally, the device supports dimming and programming features for precise control of the LED output.

The LT8391HFE#PBF is a great choice for any application requiring high current, precise control and excellent efficiency. Thanks to its built-in features such as over-voltage and under-voltage protection, thermal shutdown, and short-circuit protection, it can provide robust and reliable operation with minimal risks. Its excellent performance and flexibility make it perfect for applications in the automotive, aftermarket and other industries.

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