LTC3452EUF#TRPBF

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The LTC3452EUF#TRPBF is a high-efficiency, high-current DC-DC converter specifically designed for driving light emitting diode (LED) arrays. By leveraging its high switching frequency, the LTC3452EUF#TRPBF supports virtually any LED configuration and size, as well as various types of LED strings. It also features an adjustable switching frequency allowing for flexibility in system-level selections. The voltage feedback of the LTC3452EUF#TRPBF can be easily tailored to match different LED array requirements. This allows users to quickly and easily configure and optimize LED string current control, providing stable and efficient power delivery to the load.

The LTC3452EUF#TRPBF is an ideal Power Management Integrated Circuit (PMIC)-LED Drivers for applications such as general lighting, signage, architectural lighting, and backlighting. Its low noise output makes it ideal for applications where noise is a major consideration. Its wide operating temperature range and high efficiency make the LTC3452EUF#TRPBF suitable for a variety of applications in varying environmental conditions.

The working principle of the LTC3452EUF#TRPBF is based on a high-frequency constant current buck-type switching regulator. Its duty cycle is modulated to maintain a relatively constant current output despite variations in the input voltage or LED string resistance. The LTC3452EUF#TRPBF operates at a constant frequency typically between 1MHz and 3MHz, which makes it one of the most efficient LED Drivers available. The operating frequency can be adjusted by connecting a resistor between the RT/CT pin and ground.

The LTC3452EUF#TRPBF incorporates an internal low-dropout (LDO) regulator to provide a stable voltage supply to the LDOs in active devices or other light sources connected to it. It also contains a programmable open-loop current sense amplifier for sensing current and voltage across the LED string and for controlling the operating frequency. Additionally, the LTC3452EUF#TRPBF features a dynamic soft-start circuit that provides a smooth start-up and elimination of inrush current.

The integrated low-side current sensing circuit of the LTC3452EUF#TRPBF allows for accurate LED current control. The voltage feedback loop of the device allows users to adjust the LED string current to better match the requirements of the LED array. It also boosts efficiency by avoiding wasted energy transfers. By making use of the LTC3452EUF#TRPBF’s high switching frequency, power efficiency can reach 96.7%. This makes the LTC3452EUF#TRPBF an ideal power management IC-LED Drivers for applications where efficiency is critical.

The LTC3452EUF#TRPBF is available in a wide variety of package configurations, including TO-220, TO-252, SOIC, and TSSOP. These packages make it easier for users to package and use the device for their specific applications.

In summary, the LTC3452EUF#TRPBF is a highly efficient, high-current DC-DC converter specifically designed for driving LED arrays. It features programmable open-loop current sense amplifier, dynamic soft-start circuit, low-dropout (LDO) regulator and voltage feedback loop, making it an ideal PMIC-LED Drivers for general lighting, signage, architectural lighting, and backlighting applications.

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