LT3746EUHH#PBF

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PMIC LED Drivers are a type of LED driver meant for PMIC (Power Management IC) applications, such as those found in cell phones and other hand-held electronic devices. The LT3746EUHH#PBF is an example of a PMIC LED Driver. This product is designed for driving high-power LEDs by converting a 3.2V – 5.5V input voltage into constant regulated current driving high-power LEDs with up to 900mA. This product is provided in a Dual In-Line package with various junction temperature settings, PWM dimming and Internal Soft Start capabilities.

The LT3746EUHH#PBF consists of an input voltage regulator, an internal output resistor, an output transistor and a current source. The voltage regulator adjusts the input voltage so that the output current is regulated by the internal resistor while the output transistor switches the output current. The current source adjusts the output current so that the current is constant regardless of the input voltage or the temperature of the IC.

The application field of LT3746EUHH#PBF is mainly to drive high-brightness (HB) LEDs. This product supports both constant current and PWM dimming, and it can also provide a stable current for a wide range of input voltages, which makes it suitable for applications such as automotive lighting and portable lighting devices.

The working principle of the LT3746EUHH#PBF is the same as that of other PMIC LED Drivers; it uses a current-mode power conversion technique to convert a wide range of input voltages into a constant current. This current is then used to drive the LED. The current source adjusts the output current so that the current is constant regardless of the input voltage or the temperature of the IC. This ensures that the LED will always be powered at the same intensity, even when the input voltage fluctuates.

The LT3746EUHH#PBF is also equipped with various protections, such as over-temperature protection, current limit protection and short-circuit protection, which allows it to operate safely and reliably in various environments. The product is also RoHS compliant, making it suitable for use in eco-friendly applications.

In conclusion, the LT3746EUHH#PBF is a reliable and cost-effective PMIC LED Driver designed for driving high-power LEDs. This product is suitable for driving high-brightness LEDs and provides protection features that ensures it will operate safely and reliably in various environments.

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