RT8450BGQW

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LED drivers are power management integrated circuits (PMICs) designed to interface and control the current for lighting applications, such as LED bulbs and strips, LCD backlights and so on.

The RT8450BGQW is a PMIC - LED driver device targeted at TVs and LCD monitors. It consists of two channels that can be used together or separately. Each channel can supply up to an externally adjustable 100 mA load current and up to 22 V across a wide array of voltages.

It is designed to provide versatile dimming functionality and is controlled through a dedicated PWM signal. Overvoltage and overcurrent protection are provided by built-in circuitry, further increasing device\'s lifetime and capabilities. The device also provides over-temperature protection, ensuring brightness and color uniformity of a given product.

The RT8450BGQW application field consists of TVs, monitors and LCD backlights. It is suitable for applications requiring high power and multiple output solutions. It can provide up to 80 W of power in an array of different configurations.

Its wide input voltage range and stable output current make it suitable for LED backlight applications demanding multiple LED strings. It also features a soft-start and output ripple control, as well as constant LED current regulation.

The RT8450BGQW working principle is based on switch-mode power supply technology. It is designed for constant-voltage operation and works by controlling the primary MOSFET switch to regulate the average voltage across the LED string. The output current is then regulated by controlling the duty cycle or pulse-width of the signal. This ensures that the output current of the LED is always maintained constant.

The ability to control the output current using a PWM signal makes the RT8450BGQW ideal for applications that require dimming or brightness control of the LED. It also functions without the need for an additional inductor, making it an efficient and cost-effective solution for a wide array of applications.

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