LT8391EUFD#TRPBF

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The LT8391EUFD#TRPBF is a highly efficient, high-density step-down controller for LEDs in portable applications. It is a Power Management IC (PMIC) specifically designed for LED drivers. The IC is integrated with a wide range of protections which enable it to work with both single and multi-string LEDs. It features an integrated buck converter with a wide input voltage range, allowing it to accommodate a variety of input sources such as Li+ batteries. The IC also offers a range of advanced dimming and current control features that enable efficient LED power management.

The LT8391EUFD#TRPBF is designed to provide a wide variety of LED driver applications, such as LED backlighting, flash lights, automotive LED lighting, and general LED lighting. It provides an efficient and safe LED driving solution for single and multi-string white LED applications. It also supports a wide range of dimming methods, such as analog voltage dimming, pulse width modulation (PWM) dimming, digital signal dimming, and dimming.

The LT8391EUFD#TRPBF operates with a wide input voltage range of 3V to 50V, providing a high level of flexibility while powering the LEDs. The device has a maximum output current of 8A and a maximum output voltage of 30V. It also features an integrated Step-down regulator with an adjustable output voltage between 0.7V and 15V. The IC offers fully integrated over-temperature, over-current, and over-voltage protection, making it safe and reliable for use in a variety of LED driver applications.

The LT8391EUFD#TRPBF supports both forward and reverse current sensing. The device is integrated with a thermometer, which allows for temperature sensing over a wide range of temperatures. Furthermore, it has a reverse battery protection feature and a short-circuit protection feature. Additionally, the LT8391EUFD#TRPBF provides LED open-circuit protection via a dedicated LED_OC pin. The device also features an analog and digital dimming interface, which enables various dimming schemes.

The LT8391EUFD#TRPBF works on the principle of constant-current regulation. It typically consists of two main components, a voltage regulator and a current sensing circuit. The voltage regulator monitors and maintains the output voltage of the driver at a preset level. The current sensing circuit monitors the LED current and adjusts the output power accordingly. This is done by continuously monitoring the LED current and comparing it to a reference voltage which is used to trigger a switch to grant or limit LED current. This provides essential current regulation accuracy, which helps extend LEDs’ lifetime and reduce light flicker.

The LT8391EUFD#TRPBF is an excellent choice for LED driver solutions for a wide range of applications. It offers a high-efficiency solution, with a wide input voltage range and fully integrated safety features. The device is specifically designed for high-power LED applications, providing an efficient and reliable LED driver solution. It is an excellent choice for applications such as LED backlighting, general lighting, automotive lighting and flash light solutions.

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